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.
Use milk bottles for pencil storage Recycle plastic milk bottles in to pencil holders. Grab a craft knife and recycle your large plastic milk bottles in to pencil holders. Extra points if you go all OCD and file them by colour.