From season 5 episode 6 Frank (The Elongated Man) and Cecille are investigating to find out who is Cicada. They confront a corrupt FEMA official to get information from him. Frank holds up his Lamborghini keychain as evidence he has been stealing money from the government.
From season 5 epsisode 10 A new villain (Silver Ghost) breaks Weather Witch out of prison. She has a meta tech keychain. A piece of the dark matter infused satellite apparently attached to a car keychain granting the holder the ability to control some technology (mostly cars.)
