Heres a list of inventions that I got from a joke book. A parachute that opens on impact A left-handed screwdriver A one-way escalator An ejector seat on a helicopter Glow in the dark sunglasses An inflatable anchor Fireproof matches Double-sided playing cards Submarine screen doors Waterproof teabags A solar-powered night light A waterproof sponge Reusable ice cubes See-through toilet paper Powdered water A dictionary index A book on how to read An inflatable dart board Skinless bananas Pedal-powered wheelchairs