Do you want to get a cardio work out, tone your lower body and help a friend improve his tennis game? Watch this video which demonstrates how to set up and use a bicycle pedal-powered tennis ball launcher.
its a much more intense game of dodge ball. jackass crew members will line up against a wall while another crew member peers out of the sun roof of a car with a tennisball launcher shooting tennis balls at the other crew members. idea 17
tell somebody to jump off a huge ramp but then secretly use frisbees, tennis ball launchers and clay pigeon machines to shoot things at them.
WonderHowTo is made up of niche communities called Worlds. If you've yet to join one (or create your own), get a taste below of what's going on in the community. Check in every Wednesday for a roundup of new activities and projects. More amazing community contributions this w ...more
In less than five minutes, transform an innocuous lip balm into a precision rocket. And all you need is Chapstick. Daniel Bauen of Engineerable.com is an inventor, engineer and all-around DIY wizard. He's built everything from autonomous robots to bicycle-powered tennis ball ...more