Make a launchpad that holds the bottle with the neck downwards, lets you attach the pump and stand behind the bottle. One good method is to plant a spade or garden fork in the ground at a low angle ...

Make a hole through the length of the cork ... Oh, and an apple may have fallen on his head. The water bottle rocket demonstrates two of his laws. Every action has an equal and opposite reaction.

This water rocket launcher lets you do just that. Built using the frame from an old grill, a soda bottle takes its place ... also pick up some extra PVC to make this pressurized water cannon.

He’ll be the talk of the 4th of July picnic once he brings out his latest build—a weaponized, remote-controlled strandbeest that shoots bottle rockets. There are a bank of money shots up on Imgur.