As technology advances we’ll see more and more devices relying on solar energy. Coming from Logitech laboratories, this 1/3-inch thick keyboard seems to be a regular one until you find its secret: it can be completely powered by the solar panels it features. Fully charged, it can be operated for up to three months in total darkness. At 80$, it’s a nice thing to have around.. waiting for the first solar-powered laptop.
More details, here.