Key Matching Puzzles

I have a container full of keys from, oh who really knows.  T found them and was instantly in love.  It is always the oddest things that catch their interest, isn't it?  I saw an activity in our future.  I stuck them on our home copier and made a copy of the keys in different positions.  Then set them on the table with the key container.  Sure enough, T knew just what to do.  Matching the keys to their picture.  He played with this game for a long time, wondering aloud, did this go to the car, did this one go to playroom door?  It was a big hit.  Great for matching and problem solving.  I think next time I will write numbers on the keys and the pictures and turn it into a number recognition game.