The $80 Logitech K750 is the first solar keyboard built of fully recyclable plastic. The device has a set of solar panels along the top edge and even includes a luxmeter to tell how well things are charging. It charges in sunlight and even under a standard bulb.
If you’re familiar with Logitech keyboards they usually last for months – if not years – on the same battery. This, however, will ensure that you don’t go dark in the midst of a marathon blogging session.