Credits go out for @apocalyptech @GrzesPL and @sadexotic for finding some of the drop places. Thank you guys.
There are also galleries and a spreadsheet made by @apocalyptech. You’ll find the links for them after the list.
For the other cosmetics, check my other list: List of character skins and heads (including all DLCs)
For the vehicle parts and paint jobs, with some pictures of the rare spawn places:
List of vehicle parts and paint jobs (up to and including DLC 3, with pictures of the rare spawn places)
Rarities. For saving time and a million mile long descriptions, here are the rarities:
Common or White Rarity
Uncommon or Green Rarity
Rare or Blue Rarity
Epic or Very Rare/Purple Rarity
Legendary or Orange Rarity
Notes:
1. Vault Insider Program (VIP) ended on May 18, 2020, Twitch Prime loot can’t be redeemed after May 14, 2020. These cosmetics (probably) won’t be available anymore.
2. The challenges for the event based cosmetics needs to be completed only with one character. Once the rewards are claimed, it will be automatically added to the total count for all the characters. Also, every other cosmetic (except emotes) needs to be unlocked with only one character and those will be available to all the characters as well.
- 2.1 The event based cosmetics slightly changed this year (for the Bloody Harvest event), unfortunately the ones from 2019 are unobtainable.
3. My personal experiences were (and some of the guys’ in the comments as well), if you’re farming for Common (white) or Uncommon (green) rarity cosmetics, they have bigger chances of dropping if the Mayhem Mode is turned off. For Rare (blue) rarity or greater, get Mayhem Mode turned on. This game is pure RNG, so it’s not a surprise if you get a legendary cosmetic item with Mayhem Mode turned off.
4. This code activated all the previously released Mercenary Day rewards in one. Expired December 31st, 2020
59WBB-FSWR9-KFC69-R3B3B-3FKST
Echo Themes
- ECHO-3 Classic - Default
Crazy Earl
- Potato Phone - Epic; 90 Eridium
- Power Surge - Rare; 70 Eridium
- Psychodelic - Rare; 70 Eridium
- Paging Dr. Zed - Epic; 90 Eridium
- Loaded Sprinkles - Rare; 70 Eridium
- Gold as the Grave - Legendary; 120 Eridium
- AR-gyle Experience - Legendary; 120 Eridium
- Titan Up the Graphics - Legendary; 120 Eridium
- Handheld Hunter - Legendary; 70 Eridium
- Crimson Graffiti - Rare; 70 Eridium
- Guac Shock - Rare; 70 Eridium
- Dahl Kidz - Legendary; 120 Eridium
- Tropical - Epic; 90 Eridium
- Space Catz - Legendary; 120 Eridium
World drop
- Antique Chick - Epic; world drop
- Birthday Dawg - Legendary; world drop
- Chocolate Bubblegum - Epic; world drop
- Clear Plastic (Cherry) - Rare; world drop
- Clear Plastic (Dozer) - Rare; world drop
- Clear Plastic (Ice) - Rare; world drop
- Clear Plastic (Jungle) - Rare; world drop
- Clear Plastic (Steel) - Rare; world drop
- Eye Pad - Legendary; world drop
- Game Comrade - Epic; world drop
- Industrial Chick - Epic; world drop
- Pepperoni Dream - Legendary; world drop
Unknown
- Comics Master - Legendary; ???
- Convention Hero - Legendary; ???
- Electronics Master - Legendary; ???
Moxxi’s Heist of the Handsome Jackpot (DLC 1)
- Executive Line - Rare; dropped by Fabricator
Guns, Love, and Tentacles: The Marriage of Wainwright & Hammerlock (DLC 2)
- Tentacular - Rare; world drop, dropped by Badass enemies and Tom and Xam
- Eye Balls - Rare; reward for completing all of the Hammerlock’s Occult Hunt Crew Challenges, cosmetic will be sent in mail
- Fleshy - Rare; dropped by Tom and Xam
- Occult Glow - Rare; dropped by Kratch
Bounty of Blood (DLC 3)
- Local Service - Rare; world drop (by Devil Riders), dropped by The Ruiner
- Rocky Talkie - Rare; world drop (by Devil Riders), dropped by The Ruiner
- Ruination - Rare; world drop (by Devil Riders), dropped by Bellik Primis, The Ruiner and The Quartermaster
- Tattoo Transmitter - Rare; world drop (by Devil Riders), dropped by The Ruiner
Psycho Krieg and the Fantastic Fustercluck (DLC 4)
- Grapevine Hotline (animated) - Rare; dropped by Evil Mordecai and Dr Benedict
- Hotwire Handheld (animated) - Rare; reward for completing all of the Signal to Noise Crew Challenges, cosmetic will be sent in mail
- Electric Cell (animated) - Rare; dropped by Evil Brick and Dr Benedict
- Hot and Cold Call (animated) - Rare; dropped by Evil Brick and Dr Benedict
Designer’s Cut
- Accept the Charges - ???
- Call-A-Ride - ???
- Mecho-3 - ???
- Tina’s Triple Trouble Terminal - reward after finishing Arms Race
Mercenary Day rewards (new code expired, see notes)
- Candy Cane - Legendary; W̶9̶W̶T̶T̶-̶F̶S̶F̶T̶Z̶-̶5̶W̶R̶Z̶R̶-̶6̶3̶B̶B̶3̶-̶W̶K̶6̶W̶T̶
- Reinskag (animated) - Legendary; K̶Z̶C̶3̶B̶-̶3̶3̶Z̶3̶9̶-̶5̶C̶F̶S̶X̶-̶6̶B̶T̶J̶3̶-̶R̶W̶F̶Z̶F̶
- Snowglobe (animated) - Legendary; K̶S̶W̶3̶T̶-̶T̶5̶9̶J̶S̶-̶C̶W̶F̶9̶6̶-̶R̶B̶J̶3̶3̶-̶T̶3̶F̶C̶W̶
Special/Challenge
- Maliwalkie-Talkie - Legendary; reward for finishing Takedown at the Maliwan Blacksite
- Cosmic Communicator - Epic; reward for finishing Takedown at the Guardian Breach
- Classic Callback - Legendary; Retro Cosmetic Pack (included in Deluxe and Super Deluxe edition of the game)
- Screen of Death - Legendary; Neon Cosmetic Pack (included in Deluxe and Super Deluxe edition of the game)
- VIP Status - Legendary; Vault Insider Program (VIP) reward (can’t be redeemed anymore after May 18, 2020)
- HECKO-3 - Legendary; reward for completing 8 challenges in the 2019 Bloody Harvest event (unobtainable)
- Message From Beyond - Epic; reward for completing 8 Challenges in the 2020 Bloody Harvest event (event expired)
- ECHOcardiogram (animated) - Legendary; reward for breaking 10 hearts in Broken Hearts Day event (event expired)
- VECH-tor Graphics - Legendary; reward for completing 3 challenges in Revenge of the Cartels event (event expired)
- Stream Dech - Epic; available only for Twitch Prime users (can’t be redeemed anymore after May 14, 2020)
- AMD Red Chipper - Legendary; AMD themed cosmetic. After buying specific real life CPUs from AMD online store, you got a copy of Borderlands 3 and a SHIFT Code for the cosmetic. This purchase was available until December 31, 2019
Room Decorations
- Framed Firewall - Epic; reward for completing 10 challenges in Revenge of the Cartels event (event expired)
- Wotan’s Head (interactive) - Rare; dropped only by Wotan the Invincible
- The Martyr’s Head - Rare; dropped only by Scourge the Invincible Martyr
Common
- 5KAGB8 - world drop, Cash Trap slot machine
- 5P8NKM3 - world drop, Cash Trap slot machine
- Decorative Bomb - world drop, Cash Trap slot machine
- Hand Clock - world drop, Cash Trap slot machine
- Jack Mask - world drop, Cash Trap slot machine
- Mounted Ratch - world drop, Cash Trap slot machine
- R0ADK1L - world drop, Cash Trap slot machine
- Use Protection - world drop, Cash Trap slot machine
- Three Fingers - world drop, Cash Trap slot machine
Uncommon
- COV Bat - world drop, Cash Trap slot machine
- COV Engine Club - world drop, Cash Trap slot machine
- COV Sword - world drop, Cash Trap slot machine
- COV Wrench - world drop, Cash Trap slot machine
- Killavolt’s Shield - world drop, Cash Trap slot machine
- Methane Monitor - world drop, Cash Trap slot machine
- Mouthpiece Speaker - world drop, Cash Trap slot machine
- Rocketeer Mask - world drop, Cash Trap slot machine
- Western Portrait 1 - world drop, Cash Trap slot machine
Rare
- COV Hammer - world drop, Cash Trap slot machine
- HBC Poster 1 - world drop, Cash Trap slot machine
- HBC Poster 2 - world drop, Cash Trap slot machine
- HBC Poster 3 - world drop, Cash Trap slot machine
- Mounted Skag - world drop, Cash Trap slot machine
- Mounted Spiderant - world drop, Cash Trap slot machine
- Skag Attack - world drop, Cash Trap slot machine
- Storm Brewin’ - world drop, Cash Trap slot machine
Epic
- COV Buzzaxe - world drop, Cash Trap slot machine
- COV Cleaver - world drop, Cash Trap slot machine
- Dynasty Diner - world drop, Cash Trap slot machine
- Framed Duchess - world drop, Cash Trap slot machine
- HBC Poster 6 - world drop, Cash Trap slot machine
- Psycho Mask - world drop, Cash Trap slot machine
- Service Bot Console - world drop, Cash Trap slot machine
- Western Portrait 2 - world drop, Cash Trap slot machine
Legendary
- Mouthpiece Mask - world drop, Cash Trap slot machine
- Trooper Disc - world drop, Cash Trap slot machine
- Trooper Shield - world drop, Cash Trap slot machine
Crazy Earl
- Bandit Tire - Uncommon; 25 Eridium
- Pandoracorn - Uncommon; 25 Eridium
- Troy Grafitti - Rare; 35 Eridium
- Tyreen Grafitti - Rare; 35 Eridium
- Skag Skull - Epic; 45 Eridium
- Life Preserver - Common; 20 Eridium
- Bug Zapper - Common; 20 Eridium
- Buzzsaw Blade - Common; 20 Eridium
- Jakobs Poster - Common; 20 Eridium
- Trophy Fish - Uncommon; 25 Eridium
- Salvation - Uncommon; 25 Eridium
- Holy - Uncommon; 25 Eridium
- HBC Poster 4 - Epic; 45 Eridium
- HBC Poster 5 - Epic; 45 Eridium
- Vegan - Rare; 35 Eridium
- Live Streaming - Rare; 35 Eridium
- Safety First - Common; 20 Eridium
- Hard Hat - Common; 20 Eridium
- Dip Stick - Common; 20 Eridium
- Neon Heart - Legendary; 60 Eridium
- Neon Lips - Legendary; 60 Eridium
- Framed Landscape - Legendary; 60 Eridium
- The Big 3 - Legendary; 1 Eridium
Quest Reward
- Moxxi’s Sign - Legendary; Kill Killavolt side mission reward, cosmetic will be placed in the inventory
Moxxi’s Heist of the Handsome Jackpot (DLC 1)
- Handsome Jackpot - Common; world drop, dropped by Stanley
- Neon Peach - Common; dropped by Debt Collector in Sisterly Love side mission
- Holo-Jack (interactive) - Common; reward for activating all of the Handsome Jack Holograms
- Casino Banner - Common; dropped by Jackpot (the Jack’s Bot)
- Jack Plaque - Common; dropped by Gorgeous Armada
- Saxophone - Common; dropped by Third Rail
Guns, Love, and Tentacles: The Marriage of Wainwright & Hammerlock (DLC 2)
- The Lodge Poster - Common; reward for completing all of the Mancubus Eldritch Statues Crew Challenges, cosmetic will be sent in mail
- Dahl Bonded Blueprints - Common; world drop, dropped by Badass enemies
- Talking Fish (interactive) - Rare; world drop (usually by fishnets)
- Just Married Poster - Common; reward for completing all of the Gaige’s Gift Crew Challenges, cosmetic will be sent in mail
- Warrior Horn (interactive) - Common; dropped by Eista (the Invincible), after We Slass (Part 3) side mission is completed
- Lunatic Shield - Common; dropped by Empowered Grawn
- Private Eye - Common; world drop, dropped by Tom and Xam
- Framed Portal (interactive) - Legendary; dropped by Loot Skritaari (Portal Chests, usually in Cursehaven)
Bounty of Blood (DLC 3)
- Bellik Trophy - Rare; world drop (by Devil Riders), dropped by The Ruiner and The Quartermaster
- High Noon Clock - Rare; world drop (by Devil Riders, Hellions and Scourges), dropped by The Ruiner
- Key to the City - Epic; Riding to Ruin story mission reward, cosmetic will be sent in mail
- Rampage of the Gorgonoth Poster - Rare; world drop (by Devil Riders), dropped by The Ruiner and Karmash
- Ruiner Tapestry - Epic; reward for completing all of the Sato’s Saga Crew Challenges, cosmetic will be sent in mail
- Saloon Sign - Rare; world drop (by Devil Riders), dropped by The Ruiner
- Seven Smuggers - Rare; dropped by The Ruiner
- Old Guitar (interactive) - Epic; reward for completing all of the Creature Feature Crew Challenges, cosmetic will be sent in mail
- Chemistry Set (interactive) - Epic; world drop (by Belliks)
- Core Lamp - Epic; dropped by The Ruiner and The Quartermaster
Psycho Krieg and the Fantastic Fustercluck (DLC 4)
- Memory Orbs (animated) - Legendary; dropped by Evil Mordecai and Dr Benedict
- Psychoreaver Trophy - Legendary; dropped by Psychoreaver
- Golden Buzz-axe - Legendary; dropped by Evil Mordecai, Locomöbius and Dr Benedict
- Krieg’s Moon - Common; dropped by Dr Benedict
- Krieg’s Mask (animated) - Common; dropped by Evil Brick and Dr Benedict
Weapon Skins
Crazy Earl
- Gun-Fetti - Legendary; 300 Eridium
- Painbow - Epic; 220 Eridium
- Crepuscule - Rare; 170 Eridium
- Extraspectral - Uncommon; 130 Eridium
- Burnished Steele - Epic; 220 Eridium
- Thunderhead (animated) - Legendary; 300 Eridium
- Skelebones - Common; 100 Eridium
- Black Dragon - Rare; 170 Eridium
- Blueberry Limade - Uncommon; 130 Eridium
World drop
- Dandy Lion - Common; world drop, Loot Boxer slot machine
- Fire and Ash - Common; world drop, Loot Boxer slot machine
- Maliwannabe - Uncommon; world drop, Loot Boxer slot machine
- Ink and Kill - Rare; world drop, Loot Boxer slot machine
- Deep Nebula (animated) - Legendary; world drop, Loot Boxer slot machine
- Psychodelic (animated) - Legendary; world drop, Loot Boxer slot machine
- It’s Poop! - Epic; world drop, Loot Boxer slot machine
Special/Challenge
- Ghoul Metal Gray (animated) - Legendary; reward for completing 15 challenges in the 2019 Bloody Harvest event (unobtainable)
- Porphyrophobia - Legendary; reward for completing 15 challenges in the 2020 Bloody Harvest event (event expired)
- Leather and Regret - Epic; reward for using 10 points in the Survivor tree in Guardian Rank
- Dead Set - Epic; reward for using 10 points in the Hunter tree in Guardian Rank
- Red Sands - Epic; reward for using 10 points in the Enforcer tree in Guardian Rank
- Hot Blooded - Epic; reward for completing 13 Crimson Radio Crew Challenges, cosmetic will be sent in mail
- Retro Blaster - Epic; Retro Cosmetic Pack (included in Deluxe and Super Deluxe edition of the game)
- Gearbox Prime - Epic; Gearbox Cosmetic Pack (included in Deluxe and Super Deluxe edition of the game)
- Butt Dazzle (animated) - Legendary; Butt Stallion Cosmetic Pack (included in Deluxe and Super Deluxe edition of the game)
- Goldie Locks and Loads - Epic; Gold Weapon Skins Pack (pre-order bonus)
Other
- Super Oaker - Legendary; developer only weapon skin
Weapon Trinkets
Crazy Earl
- Action Axton - Common; 50 Eridium
- AnarChic - Epic; 110 Eridium
- Beast Bowl - Rare; 85 Eridium
- Cloak and Swagger - Legendary; 150 Eridium
- Dedication to Capitalism - Common; 50 Eridium
- Ellie’s Power Flower - Uncommon; 65 Eridium
- Goodnight Kiss - Rare; 85 Eridium
- Guardian’s Lament - Epic; 110 Eridium
- H Marks the Spot - Legendary; 150 Eridium
- Hoops Dreams - Common; 50 Eridium
- Jack’s Off - Legendary; 150 Eridium
- Kaboom Bunny - Rare; 85 Eridium
- Last Ride - Epic; 110 Eridium
- No, You’re Crazy - Uncommon; 65 Eridium
- Null and VOid - Epic; 110 Eridium
- Sign of the Hawk - Rare; 85 Eridium
- Splorghuld, The Flesh-Slayer - Common; 50 Eridium
- Super General Claptrap - Uncommon; 65 Eridium
Quest reward
- Book of the Storm - Epic; The Impending Storm story mission reward, trinket will be placed in the inventory
- Rhys’s Piece - Rare; Atlas, At Last story mission reward, choosing the option Rhys to shave his mustache, trinket will be placed in the inventory
- Buckle Up - Rare; Atlas, At Last story mission reward, choosing the option Rhys NOT to shave his mustache, trinket will be placed in the inventory
- Drop It - Common; Atlas, At Last, story mission reward, trinket will be placed in the inventory
- Stink Eye - Legendary; Opposition Research side mission reward, trinket will be placed in the inventory
- Itsy Bitsy Rakky Hive - Rare; Let’s Get it Vaughn side mission reward, trinket will be placed in the inventory
World drop
- Adapt and Overcome - Rare; world drop, Loot Boxer slot machine
- Born To Kill - Uncommon; world drop, Loot Boxer slot machine
- Deadeye Decal - Uncommon; world drop, Loot Boxer slot machine
- Explosives Enthusiast - Rare; world drop, Loot Boxer slot machine
- Frakkin’ Toaster - Rare; world drop, Loot Boxer slot machine
- God-King’s Bling - Epic; world drop, Loot Boxer slot machine
- Hunter’s Patch - Epic; world drop, Loot Boxer slot machine
- Just In Case - Legendary; world drop, Loot Boxer slot machine
- Lil’ Chomper - Epic; world drop, Loot Boxer slot machine
- One Shot - Rare; world drop, Loot Boxer slot machine
- Siren’s Mark - Legendary; world drop, Loot Boxer slot machine
- Switch Hitter - Rare; world drop, Loot Boxer slot machine
- Track and Destroy - Rare; world drop, Loot Boxer slot machine
- Turtle Up - Rare; world drop, Loot Boxer slot machine
- When In Doubt, Chuck It - Rare; world drop, Loot Boxer slot machine
- Who Needs Gods? - Rare; world drop, Loot Boxer slot machine
Crimson Radio Crew Challenge rewards
- Earn Your Stripes - Rare; reward for completing 3 Crimson Radio Crew Challenges, trinket will be sent in mail
- Queen of Hearts - Rare; reward for completing 8 Crimson Radio Crew Challenges, trinket will be sent in mail
- Hat Trick - Epic; reward for completing 17 Crimson Radio Crew Challenges, trinket will be sent in mail
Moxxi’s Heist of the Handsome Jackpot (DLC 1)
- Slot Shot - Rare; world drop (by Rigged Mimic Machines)
- Nothing Gold Can Stay - Legendary; dropped by Jackpot (the Jack’s Bot)
Guns, Love, and Tentacles: The Marriage of Wainwright & Hammerlock (DLC 2)
- Tactical Tentacle - Legendary; world drop (usually by tentacle toilets), dropped by Badasses and Kratch
- Nibblenomicon - Rare; dropped by What Was Once Harriet in The Nibblenomicon side mission
Bounty of Blood (DLC 3)
- Battle Driver - Epic; world drop (by Devil Riders)
- Devil Tooth - Epic; reward for completing all of the Skin to Win Crew Challenges, cosmetic will be sent in mail
Psycho Krieg and the Fantastic Fustercluck (DLC 4)
- Divergent Thinking - Legendary; Inhuman Trials story mission reward, trinket will be placed in the inventory
- King’s Knight - Epic; Check, Please side mission reward, trinket will be placed in the inventory
Designer’s Cut
- DAHL Tags - ???
Special/Challenge
- Diamond Ponytail - Legendary; Butt Stallion Cosmetic Pack (included in Deluxe and Super Deluxe edition of the game)
- For Funsies - Legendary; Toy Box Cosmetic Pack (included in Deluxe and Super Deluxe edition of the game)
- Gearbox Fan - Legendary; Gearbox Cosmetic Pack (included in Deluxe and Super Deluxe edition of the game)
- Neon Skelly - Legendary; Neon Cosmetic Pack (included in Deluxe and Super Deluxe edition of the game)
- Gold Tier - Legendary; Gold Weapon Skins Pack (pre-order bonus)
- Vault Insider VIP - Legendary; Vault Insider Program (VIP) reward (can’t be redeemed anymore after May 18, 2020)
- Shrunk 'n Dead - Rare; reward for completing 4 challenges in the 2019 Bloody Harvest event (unobtainable)
- A Shrinking Feeling - Epic; reward for completing 4 challenges in the 2020 Bloody Harvest event (event expired)
- Cosmic Romance - Epic; reward for breaking 25 hearts in Broken Hearts Day event (event expired)
- Retro Outrunner - Epic; reward for completing 6 challenges in Revenge of the Cartels event (event expired)
- Mercenary Day Ornament - Legendary; Mercenary Day reward, W̶S̶5̶J̶3̶-̶W̶T̶Z̶J̶Z̶-̶W̶K̶R̶H̶6̶-̶R̶J̶3̶T̶J̶-̶J̶S̶Z̶H̶C̶ (new code expired, see notes)
- Caster Blaster - Epic; available only for Twitch Prime users (can’t be redeemed anymore after May 14, 2020)
- Vapor Hoodlum - Legendary; trinket was sent in mail if the second DLC was downloaded and played/or the game was started in the first week(s) of the release of the DLC (needs confirmation)
Other/Unknown
- On The Hunt - Rare; ???
- Wittle Warrior - Epic; developer only trinket
Unobtainable
- Keep Your Eye Out - Uncommon
- One Army - Legendary
I know these are not really cosmetics, but let it be here.
Emotes
Default
- Cheer
- Laugh
- Point
- Wave
Crazy Earl
- Heart - Common; 120 Eridium
- Finger Guns - Rare; 95 Eridium
- Robot Dance - Epic; 155 Eridium
- Kick Dance - Rare; 120 Eridium
- Chicken Dance - Common; 155 Eridium
- Death - Rare; 95 Eridium
Moxxi’s Heist of the Handsome Jackpot (DLC 1)
- Make It Rain - Epic; world drop
- The Handsome - Epic; dropped by Jackpot (the Jack’s Bot)
Guns, Love, and Tentacles: The Marriage of Wainwright & Hammerlock (DLC 2)
- Portal - Epic; dropped by Loot Skritaari (Portal Chests) and Tom and Xam
- Marry Me - Legendary; dropped by Eleanor and the Heart
Bounty of Blood (DLC 3)
- Crossed Arms - Rare; reward for completing all of the Good Prospects Crew Challenges, cosmetic will be sent in mail
- The Worm - Rare; reward for completing all of the Gehenna’s Most Wanted Crew Challenges, cosmetic will be sent in mail
Psycho Krieg and the Fantastic Fustercluck (DLC 4)
- Rage - Legendary; dropped by Evil Brick, Evil Lilith, Locomöbius, Dr Benedict and Psychoreaver
- Mindblowing - Epic; dropped by Evil Lilith, Locomöbius and Dr Benedict
Links:
ECHO Themes: https://imgur.com/gallery/Uyxfsrx
Room Decorations: https://imgur.com/gallery/ae2GkE3
Weapon Skins: https://imgur.com/gallery/SXbNYy1
Weapon Trinkets: https://imgur.com/gallery/jjjYVt5
I actually forgot 3 COV stuff from the room decorations, one is the COV Wrench 
it happens if you have at least 4-5 tabs open and you just try to make it in one place 
When I started playing, I thought that this kind of list I did about the cosmetics, will be made like 1 month after the game was released, since I knew the hype about it, but nope. I didn’t follow the drops, which, turns out it was a mistake 