You searched for: “copoclephile
copoclephile, copoclephilist (s) (noun); copoclephiles; copoclephilists (pl)
1. A collector of publicity key rings: As a copoclephile, Mary thought that the small metal rings for holding keys were very handy to have, and she especially liked the ones with small advertising decorations hanging on little chains.
2. Etymology: Greek kope, "handle" + kleis, "key" + -phile, "fondness for".