You know you've always wanted to launch a 2-liter bottle filled with water over 100 feet in the air, haven't you? Now's your chance. Amazon is selling the Aquapod Bottle Launcher, which is a simple yet fun way to use a bike pump and an empty 2-liter bottle to make a rocket.

Take the rocket to the next level with a nylon parachute and rocket fins, and the sky is the limit this summer.