Home key ring...back and front door keys, car key and my work locker key.
My SIL is a garage mechanic and he said it' surprising how many people arrive with broken ignition locks and when you look, there's about a pound of keys on the ring...all putting stress and strain on the lock, no wonder In his opinion.
Work key ring...lord knows.
Several electrical panels keys, locker key, fob for access through the building, 4 way panel keys, and a multitude of others...bloomin nuisance.