Pinky & the Brain

 

From season 1 episode 9.  The Brain tried a Christmas themed scheme to take over the world but he decides at the last minute to not do it since he didn't want to ruin the holiday.  Pinky and the Brain exchange gifts and Pinky receives a spell checker and The Brain get what he always wanted.  A globe keychain.

Guns Akimbo

 

Miles' (Daniel Radcliff) ex, Nova (Natasha Liu Bordizzo) is leaving a failed meet up with him.  He is trying to escape a fight and is running to get into her car.  Her tassle keychain matches her hair and she has a little skull keychain too.

Project Power

 

Project Power (Netflix) Jamie Foxx's character breaks into the bad's guys lair.  He steals one thug's keys, he has a red rabbit's foot keychain.  And then he takes an elevator into the lair; the key to the elevator has a 5 ball keychain.

Die Hard With a Vengeance

John McClane commandeers a taxi so he can race across NYC to stop a bomb attack.  The cabbie's keychain reads "Read Holy Qur'an The Final Revelation".  The film definitely made a point to emphasize the diversity of New York and this is one more little detail for that end.

Joker

Arthur Fleck's (Joker's) keychain is just a ring. Boring and empty. No wonder he was so depressed OR is it a reflection of society's emptiness encapsulated in the palm of his hand???? Makes you think...

Westworld

From WestWorld season 3 episode 2 there is an antique keychain featured that is amazingly accurate. Maeve is escaping Warworld (ww2 themed park) her lover Hector is helping her; this is his keychain. Love to the prop master for using a keychain that would be used in the early 1940's.

The last picture is from my personal collection that is the exact same type of keychain.

Parasite

In the climax of the movie one character is trying to escape the mayhem and his mercedes key and mercedes logo keychain can be seen.

Shazam

In the movie Shazam Billy Batson's (Shazam) most cherished possession is a compass keychain. Because the last time he saw his mother she won it for him at a carnival.

El Camino: A Breaking Bad Movie

This movie picks up right where Breaking Bad left off and follows the rest of Jesse Pinkman's (Aaron Paul) escape.  At the end of Breaking Bad Jesse drives off in Todd's El Camino, his keychain can be seen, a bottle opener, this the same keychain that can be seen in the final episode of breaking bad.  Jesse switches cars with his friends. Badger and Skinny Pete.  Skinny Pete's keychain is a die (single for dice) and a generic fob.  Badger's keychain is a posable hand.

Ash vs. Evil Dead

In the final scene of the series, the keys to Ash's Oldsmobile Delta are thrown to him.  His keychain is a bullet (a mainstay for badasses) and a skeleton arm which is just a perfect fit.  This keychain is throughout the show but not easily visible.

Always Be My Maybe

The Netflix movie Always Be My Maybe is a romantic comedy about childhood friends.  Marcus (Randall Park) is reminiscing about his past friendship with Sasha (Ali Wong) after he sees her for the first time in years.  He looks at a souvenir keychain they got at a fair with a picture of them inside it.

The Dark Knight

Harvey Dent kidnaps one of the Joker's stooges to interrogate him while he was being treated in an ambulance.  The ambulance has the keys in the ignition with keychain attached.  The keychain is a green fob with a logo or writing on it, but it is impossible to tell what that is.

Mission: Impossible - Fallout

From Mission: Impossible - Fallout

Ethan Hunt, Tom Cruise, is trying to keep a terrorist from escaping custody.  His getaway car has what appears to be just a plain blank keychain.  Disappointing.

Good Omens

Crawley's (Crowley's) 1926 black Bentley is his prized possession.  So, of course his keychain has a Bentley logo on it.  (The logo is slightly different than the real logo probably due to legal reasons.)  This screen cap is from episode 1 but the keychain can be seen several times throughout the show.

Once Upon a Time in Hollywood

Brad Pitt plays a stuntman (Cliff Booth) in this Quentin Tarantino historical fantasy film set in 1969 Hollywood.  His keychain is a miniature six shooter.  Several of Tarantino's other films have keychains prominently featured.  They can act as a small and simple prop to flesh out a character.

Toy Story of Terror (Short)

From the Disney Pixar television special Toy Story Of Terror. A red motel keychain that's very similar to this image from The Shining. In the audio commentary from the Toy Story Of Terror DVD release the filmmakers even mention the 'Kubrikian influence' on the scene.

From Treesa.  Thanks!

The Rocketeer

Cliff Secord's (Billy Campbell) keychain can been seen when his pockets are emptied in Howard Hugh's office.  His keychains are a blank metal circle, possibly a bullet, and a disc used for calculating for flying, which makes sense because he is a pilot.

The Division 2 (Video Game)

In the game The Division 2 keychains are collectible items.  They serve no purpose in the game other than being a collectible.  You can display your keychains on your backpack which is visible during gameplay.  There are many that you can find.  I only included two in the photos above.

Antiques Roadshow (UK)

I have only posted from scripted media before BUT I can do whatever I want so here's this... From the most recent season of the UK Antiques Roadshow, a couple had a keychain that went to the royal train in 1912. The king of the United Kingdom in 1912 was George V. The expert appraised the value at 200 to 400 pounds.

(from season 37 episode 5)

The Driver by Ollie Wride (feat. The Night Hour) Music Video

The singer's keys can be seen throughout the music video.  His keychain is a steering wheel.
Watch the video here: