Over its lifetime a wireless keyboard can gobble-up dozens of expensive, potentially toxic batteries. One solution – use rechargeable batteries, an endeavor that can require both effort and dedication. A simpler sustainable solution is a wireless, solar-powered keyboard. This Logitech solar-powered keyboard (above and below) charges from any light source and will hold a charge for up to three months in total darkness.
Only 1/3-inch thick – the ultra-thin keyboard has a familiar Mac layout, plus a Launchpad hot key and a concave key cap design. A tiny unifying receiver stays in your laptop and connects additional compatible wireless devices. Comes in black or silver. You can buy the Mac or PC versions of the keyboard for around $59 @ amazon.com