Uses for Plaster of Paris

I accidently bought a 5lb bucket of it-haha. I need to know what you have used/would use/could use plaster of paris for.

 

when I was a kid, my would make carvings out of dry plaster of paris. Then, he would let us paint them.

 

Halloween is coming up.....you can make jack-o-lanterns using balloons, plaster of paris and orange/red/yellow tissue paper.....

 

stepping stones maybe?

 

hmm...stepping stones sound like a good idea...maybe I can even use it to make plaques-like home sweet home type stuff?

I like the idea of the jack o lanterns. My best friend works wonders with sculpting and carving-her and I are going into business together-craftwise.