I saw one of these non stick cookie tins at Walmart, and I was breifly thinking for a moment about buying them to make plaster of paris molds out of, or wax candles. My only question would be how would I get the molds out after they're done, since this pan is hard and inflexible.
http://www.shopbakersnook.com/core/getthumb?user=2637&site=3505&w=600&h=600&file=uploaded/images/christ07%2F2105-8122_m.jpg
http://www.shopbakersnook.com/core/getthumb?user=2637&site=3505&w=600&h=600&file=uploaded/images/christ07%2F2105-8122_m.jpg