Here's a simple ornament you could make with a large group of kids in a class or as a family...snowman faces on wood slices!
Wood slices are available at stores like Hobby Lobby, or if you have a wood pile out back, you can just cut enough wood slices for whoever is making these ornaments.
Sand the face of the wood slice.
Drill a hole in the top and thread some twine or string through and tie.
Voila! A cute little snowman ornament. Add it to your homemade ornament collection and hang it on your tree.