Logitech K750 Solar Keyboard | $42 | Amazon
What if you never had to charge your wireless keyboard? That’s the idea behind the Logitech K750, which uses a strip of solar panels to soak up the light in your office and keep running essentially forever. It’s like the calculator you used in school, but a lot bigger.
It normally sells for $50-$60, but Amazon’s marked it down to $42 today, its best price since June.