Water Rocket: The combination of water, compressed air, and a plastic soda bottle serves as a great source of propulsion for a water rocket. Alternate way (without tape) to fix up those water bottle rockets. by elsa
Jet pack made from 2 liter pop bottles. Could be used for superhero costume or craft or giveaway at superhero party. The kids got these at a VBS this summer.great little accessory. I wonder how hard it is to make a bunch for all the party attendees?