OnBeat Solar Headphones
Crowdfunded projects pose a degree of risk for buyers, so be sure to do your research and fully read the seller's detailed description and production plans before plunking down your hard-earned money.
A pair of headphones with a solar panel on the headband. The power that the panel gathers is stored in two batteries inside each ear cup, then harnessed via a USB port. It can also be plugged in to store power for later use.