Cardboard Origami Bike
Israeli inventor Izhar Gafni likes a challenge, so when three different engineers told him it was impossible to make a working bike out of cardboard, he rose to the challenge. Gafni constructed a bike by using the principles of origami, he could make a strong, weight-bearing bike capable of carrying a rider up to 485 lbs! The bike is durable and weatherproof, it is economical and eco-friendly. The materials only cost $9 and is projected to sell for $60-$90.