Add a paperclip to the bottom for weight. When dropped, it will spin like a helicopter.
Glue multiple strips of colored paper (like brown or tan) together using super glue to create a thick "block". Propellers.7z
Push a pin through all the tips at the center and into the eraser of a pencil. Leave a little wiggle room so it can spin freely. Method 2: Laminated Model Propeller Add a paperclip to the bottom for weight