Although this is also interesting juxtaposed with the previous item, powering without wires is something I think about every business trip when I travel with power cords for PC, phone and iPod, and more if I bring the portable speakers…

“Researchers at MIT have shown that it’s possible to wirelessly power a 60-watt lightbulb sitting about two meters away from a power source.”

http://www.technologyreview.com/Energy/18836/