For renewable energy on a smaller scale, a graduate student in Israel developed a prototype for an elegant rocking chair called Otarky that produces energy from its rocking motion and can be used to charge devices and power a lamp.

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We also showcased several innovations from the intersection of fashion and technology -- a light-up Twitter dress, a pair of "Social Denim" jeans that let you update your Facebook status on the fly and a brilliant "Rocking Knit" chair that uses kinetic energy generated from the chair's gliding motion to knit a winter hat while you sit.

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