Pour the mixture into a small spray-mist bottle. Shake and apply as desired. Cookie cutters Mix rock salt and food coloring together. Add glue and continue mixing for 2 to 3 minutes. Mold and sculpt jewel and gem goop, using your hands.
Spoon goop into plastic cookie cutters.
Blow up a balloon as large as possible. Clamp the end of the balloon shut with a paperclip or clothespin. Allow it to stretch for 5 to 10 minutes. Deflate the balloon, and attach it to the funnel. Mix water, plaster and paint or food coloring in a large measuring cup until smooth.