HDPE as a raw material.

If you're into crafts you may need a new material to work with. You can use High Density Polyethylene, aka HDPE, or recycling plastic #2. Shred it, melt it, compress it, and use the cooled block as a source of stuff to carve, cut, turn on a lathe, and so on. I found this video on Boing Boing. Enjoy! Best aspect: you can get neat multicolour marble effects.