The RegurgitatorMedia Platforms Design TeamThis hyper-speed tire ride reportedly forces 20 percent of its riders to throw up, sending a swirl of vomit into the crowd. That’s why it’s called the regurgitator. It’s the brainchild of Ryan Doyle and Nick Bindbeutel. It spins people at as much as 5 Gs and runs for 30 to 45 seconds. After 45 seconds, your eyes may start to bleed. Like the carousel that PM took for its first ride, the regurgitator is powered by jets–and is incredibly loud.HydraulophoneMedia Platforms Design TeamHere is inventor Steve Mann’s Hydraulophone, a water-based musical instrument. Cover up the water holes and this aquatic piano plays notes.Ruben TubeMedia Platforms Design Team This is a Ruben Tube, a sculpture of fire that demonstrates the connection between sound waves and air pressure.RELATED STORIES* VIDEO: Test Ride on a Jet-Powered Carousel* MYTHBUSTERS: DIY Tips from Adam and Jamie* EARLIER: How to Build a Jet-Powered Go-Kart* PLUS: Top 5 Most Dangerous Thrill Rides* FOLLOW US: Popular Mechanics is Now on Twitter!* FRIEND US: Find PM on FacebookRecycled FlyersMedia Platforms Design TeamBreck Baldwin and Mark Harder came up with these remote-controlled, glowing recycled flyers to light up the sky at night. The little wires on these paper-airplanes-on-steroids glow in the dark.Pendulum PainterMedia Platforms Design TeamThe Pendulum Painter, created by Tom Shannon is a robotic art project. It contains six paints and a nozzle that can spray all colors at once or one at a time. The motion and the amount of paint the bot sprays are radio-controlled.Pumpkin Chunkin’Media Platforms Design TeamWhat DIY fair is complete without a trebuchet? While no people were harmed in the operation of this castle-storming tool, plenty of watermelons and pumpkins were obliterated.RELATED STORIES* VIDEO: Test Ride on a Jet-Powered Carousel* MYTHBUSTERS: DIY Tips from Adam and Jamie* EARLIER: How to Build a Jet-Powered Go-Kart* PLUS: Top 5 Most Dangerous Thrill Rides* FOLLOW US: Popular Mechanics is Now on Twitter!* FRIEND US: Find PM on Facebook
