Yolk Solar Paper

Your smartphone running out of power is either a drag or liberating, depending on who you’re asking. We’ll side with the former, and so Yolk Solar Paper excites us. Incredibly efficient for its size, Solar Paper comes in 5, 7.5 and 10 watt versions with 2, 3, and 4 panels respectively, though even the 5 watt version can fully charge a smartphone in bright sunlight within roughly two and a half hours. Since the panels are just 0.15-inches thin, they’re small enough to squeeze in between folded pages of a book, with its top segment — which includes an LCD amp meter and the USB output — sticking out. And if you need more power than one panel can manage, snap on extras magnetically, upping output while cutting charge time.

Hit up Kickstarter for details – $70