Halloween is a great time to bring in a lesson on silhouettes. It's not as easy as you may think to make a drawing in all silhouettes. You have to always be thinking in reverse. The 2nd grade and I brainstormed things that we know are in silhouette and looked at examples. One great one we looked at was an animated movie by Lotte Reiniger. She was making children's animations before Disney and all with cut paper and a stop motion camera. It really is beautiful.
This is a link to the movie we watched "Hansel and Gretel".