When enjoying the great outdoors, whether at the beach or in the mountain wilderness, many enthusiasts prefer to power down electronic devices and, untethered from modern tech, soak up the sights and sounds of nature. Even still, a cell phone can save you in case of emergency so it's a smart idea to carry one when venturing outdoors—even if just to the backyard pool. The thing about a phone, though? They only work when they're charged. Prepare for any eventuality by carrying the BioLite SolarPanel 5+ when you travel. This handy device stores energy in its integrated battery, and thanks to the adjustable kickstand and built-in sundial, you can easily adjust the panel to face the sun for maximum charging power. Available at REI; $80.