3. Key Wind Chime

If your house is anything like mine, you probably have a ton of keys that you have no idea what they unlock. We have keys to apartments that we rented years ago, mailboxes that we used eons ago and to door knobs that we have since replaced. Well, instead of just letting them hang on a key ring or throwing them out, turn them into a unique wind chime. Paint the keys different colors. Tie some colorful yarn around a coat hanger. When the keys dry, thread a piece of yarn through the holes on them and tie the yarn to the coat hanger. Hang the coat hanger outside and when the wind blows, the keys will make a melodic sound.