If you drink milk at all, then your throwing away some easy to recycle plastic that you could use of other projects. Start collecting them, and you'd be surprised how soon you'll have enough to make your own brick of plastic. This is the number "4" type plastic.
Step 1: Fondue Melt Pot
I've had this fondue pot taking up space in my closet for such a long time that I finally decided to re-purpose it to my melt pot.