I saw these being made and sold on a Facebook Page and thought they were pretty cool.

Premo is a polymer clay with comes in some really bright vibrant colours. Its really easy to soften, and mould into the desired shape. To harden, the pieces are simply baked in the oven. The possibilities are endless.

It is a great substrate for children to use too ; )

http://www.sculpey.com/product/premo-sculpey/