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.
The next generation of super heavy-lift launch vehicle is the privately developed SpaceX Falcon Heavy. Although NASA's Saturn V moon rocket could lift about two and a half times as much mass, the Falcon Heavy would still be the most powerful U.S. rocket to be launched since the Saturns were retired in 1972. [See it here.]