Portable wind turbine
is a baby wind turbine that can produce sufficient electricity to charge most gadgets, including MP3 players, digital cameras and mobile phones. Attach it to your bike handlebars or to your arm as you move about. Just 20mins of wind exposure will give the device's internal battery enough juice to support 30mins of iPod time. The $US49.99 HYmini comes with mini solar panels and extra batteries, too, so you can switch elements to store power. And in a pinch, you can charge it in a regular wall outlet.