Vibrapower

A tiny device that generates power out of vibrations has been developed by scientists of the School of Electronics and Computer Science of the University of Southampton, Hampshire. Wobbling magnets inside the device induce an electromagnetical field. 30% of the kinetic energy can be turned into electrical power.
Like a chronometer that is powered by your arm swing, the sugar-cube-sized generator could serve energy to a wide range of low-power devices such as medical implants or sensors. Future applications could include remote controls, cellphones or cameras.
Source: New ScientistTech


