I found a gallery of shadow sculptures. They amazed me because I didn't know how a pile of trash could have the shadow of a motorcycle or a person! I decided that I would try my own version...
Step 1: Gathering materials...
+A base of some sort. I ended up just grabbing a large cardboard box.
+Large sheet of paper/piece of cardboard/wall you don't mind drawing on.
+Something to bind the sculpture together (I personally used superglue and silicone)
+A source of light. I used a simple household lamp.
WhiteOakArt mentioned a good tip that I thought I'd share:
Hot melt glue would be my choice for an adhesive. It has nearly instant sticking power. If you are a hot melt connoisseur, like myself, you would use three different guns:
low temp: quick set, relatively safe. for light weight items. Available at craft stores, grocery stores, and department stores. This is what your preschool teacher uses.
high temp: industrial power. for heavy weight items. Will fry your skin off, so be careful. These guns are not easy to find. You must get them at a tool supply company. But they work great.
medium temp: for everything else. You can find these at any hardware store.
Or you could just use the medium temp, which is what reasonable people do.