This USB -controlled power strip is a pretty smart idea. Now, this thing isn’t powered by USB — rather, it connects with your computer so that you send commands to shut down or power up certain sockets (say, turning on a printer only when you need to print something). The sockets are universal, too, for frequent travelers. You’ll have to keep your PC on 24/7 to use some of the automation features, but a lot of laptops are pretty green nowadays anyway, so it should be worth it. It’ll be available in August, though the price is currently unknown.