It’s not by any means the first portable solar charger we’ve seen, but I really like the add-on potential and ease-of-use of these Brunton SolarRolls. Just roll one out and plug your phone (or camera, or other energy-hungry gadget) right into the flexible panel. And you can simply daisy-chain the panels together to get more power to charge larger devices. They come in 4.5 watt, 9 watt, and 14 watt sizes, with the largest one being strong enough to charge up most laptops. But be prepared to pay for this convienence, the list prices range from $169 to $399.