Sculpey: a polymer based modeling compound.

Sculpey is made of PVC and platicizer (phthalic esters). It is indended to be used for arts and crafts. Sculpey is a soft material, usually white, and very smooth. When modeled it holds its shape well and can be hardend in an oven at around 400 F. While it is great to use for modeling, its fumes and dust are highly toxic so it's not good for eating off of, or smoking out of.

Sculpey is available at Wal-Mart and most art supply stores. If you want, you can contact the makers:

Polyform Products Company, Inc.
Elk Grove Village, IL 60007