For camping or preparing for unexpected emergencies when traveling, it’s hard to imagine anything more useful than the BioLite CampStove. The compact (8.25 by five inches) stove works using twigs, leaves, pinecones and other combustibles for fuel so there’s no need for external propane tanks. The unique design also means that one liter of water can be brought to a boil in less than five minutes. The neatest part of the stove is the power module attachment. A built-in rechargeable lithium-ion battery runs a small fan that converts heat to electricity for charging cell phones, MP3 players or LED flashlights through a USB port. The basic BioLite CampStove sells for $130, but to get full use from this product you should add the $60 portable grill attachment. Check out the full BioLite line at www.bioliteenergy.com.