Most of our keyboards are powered when plugged into the computer, but how many of them actually harness the power of the sun? The Genius SlimStar 820 boasts a solar panel that juices up the built-in battery, helping you save on your power bill in the process. Granted, the amount of energy consumed is marginal, but imagine what would happen if everybody across the globe did the same thing? Millions could be saved each year, where the money can then be channeled for other altruistic causes. In the event where there is not enough light, the keyboard will automatically be powered by the USB cable charger.