I've found this makes a good base for a string/voodoo style doll. Use a square drinks coaster as a template and wrap the string fewer times for the base skeleton, then wrap the doll as you usually would.
Create your own model to show how the Earth orbits the Sun while the moon travels around the Earth. Great manipulative to help explain the concept. Identify and describe characteristics of the sun, Earth and moon as familiar objects in the solar system.