Camping just got greener. Biolite's brilliant, portable Camp Stove rejects petroleum-based gas in favor of twigs and bits of wood. That's cool in and of itself, because it means less oil and less open pit fires (the cause of most forest blazes). But even cooler is the fact that the Camp Stove converts waste heat into electricity, meaning you can charge your gadgets while you're off-the-grid. Then, the electricity generated can be used to power all sorts of devices, from an LED light to an iPhone to a USB radio. Smart.