BioLite CampStove isn’t cheap at $130, but it’s a neat way to charge a gadget when you don’t have power handy. Given the way the past few weeks have been here in the north east this thing is actually getting some attention. I personally keep a generic USB battery pack in my bag for emergency charges. I think that’s still more useful in general since I’m often places where I could use a boost but an open flame would be inappropriate or more likely: illegal.