I kept looking and looking at it trying to decide just what I wanted to use it for. I was pretty sure I was going to be moulding something in it but I wanted to find just the right thing. Then it hit me. Sidewalk chalk!
How to make it:
2 parts plaster of paris
a little less than 1 part water
colouring: this could be food colouring, powdered or liquid tempera paint, acrylic craft paint, or even Koolaid powder (the kind with no sugar)
Mix it up and pour it into your moulds. Moulds can vary but obviously here I used the ice cube tray I received in my stashbusting package from Dollar Store Crafts. It was the perfect size and shape for making some sidewalk chalk. I lined the tray sections with waxed paper to be sure that the plaster would release from the mould easily.
I also made some using leftover plastic Easter eggs. I put the egg together and taped it shut to be sure there was a good seal. I used my Dremel (before I put the egg together) to drill a hole in one end so there would be a space to pour in the plaster.
Other things that work are: toilet paper rolls (cover one end with plastic wrap or aluminum foil or something similar taped in place), paper cups, Jello or sand moulds, cookie cutters (again cover up one end), plastic packing containers like the ones from mini cupcakes or other purchased items, muffin tins, and so on.