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.