Otis has stomp rockets. You put the little styrofoam rocket on a launching tripod at the end of a plastic tube. At the other end of the tube is a flexible plastic bottle that you stomp on. It’s amazing:
Otis has stomp rockets. You put the little styrofoam rocket on a launching tripod at the end of a plastic tube. At the other end of the tube is a flexible plastic bottle that you stomp on. It’s amazing: