Convert a cardboard box (we used a Costco diaper box) into simple race lanes for Hot Wheels cars! This simple race track releases four cars at one time. The boys and Janie have been having fun playing with this race track, and it hasn’t broken yet.
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