Curious Keys

Lets send 10 keys the more interesting the better. 2 should be real keys, think diary or miniature padlock to keep the weight down but of course they can be any type of real key. 2 can be printed or stamped images of keys. 6 should be other types of keys, for example charms, buttons, earrings, pendants or more real keys if you are not worried about the postage. Of course you could make one into a matchbox or trading card or send a little padlock if you wish. They can be new or second hand. Every key should be different. No unexplained ones or threes.