YouTuber Simone Giertz’s Wake Up Machine; Aaron Wypyszynski’s Wing Board; Axel Borg’s 72-rotor flying chair; tornado shield; bionic boots.

Bug salt gun; backyard rollercoaster; fastest hot tub on wheels; Kevlar bike jeans; 15-foot walking robot.

Sofa on wheels; neon traffic vests for chickens; bulletproof protective cup; landmine detonator; homemade submarine.

An inventor who is half man, half camera; a homemade Tesla Coil gun; the largest replica trebuchets; cardboard emergency shelters;...

Motorized toilet paper dispenser; the Hendo Hoverboard; a jet-engine powered shopping cart; rocket golf; prosthetics for children.

LED masks; wolverine claws; a fire fighting water bucket; the Maverick Flying car; slingshot guru.