21 Cosas que te estás perdiendo por tirar las anillas de las latas
Pop Top Chainmail using a few pull tabs, a key, staple remover, and wire cutters. Do your own thing or recycled project.
Make a wind chime out of old keys and acrylic paint. - This site has lots of cheap outdoor/backyard ideas. I can't use most because I live in an apartment - but I love the old key to windchime and spray painted folding chairs.