Cluin beat me to it. I made windchimes of several sets of old keys years ago. They were kind of neat.

I think we save old keys partly as talismans...triggers of memories...guards against the one day when we really might need one of them.:-) Some we've saved specifically for our attachment to whatever car they belonged to: my old 1963 Ford Galaxie convertible...our old 1980 Subaru wagon which we bought the day before we got married...my old Ford Cortina, etc. Mom and Dad's house just had an old skeleton key...we never used the lock. I think I still have one of them left, too. I love old keys!

kat