See the glove in this video? It's made of conductive yarn that's 80 percent polyester and 20 percent stainless steel, which gives it the power to control electronic components. In fact, its creator, Royal College of Art student Yen Chen Chang, wired it so that it functions as a wearable musical instrument that's both a keyboard and a guitar. This glove is but one of Chang's unusual creations designed to control devices without the use of buttons and touchscreens, though. He also covered a huge ball with the magical yarn to control a juicer -- the harder you squeeze the ball, the more juice you get. Then there's the mat that controls a small electric fan when you rub it, and a thin strip of knitted material that can dim and brighten a lamp when you pull on it.