Check out this video showing how to make the simple Top Lit Up Draft Stove. (TLUD Stove) This type of stove along with the Rocket stove won't put out any smoke into the air that can be seen by others, if you know what I mean. You could make a 1 gallon version to attach to your go bag. Both types of stoves are simple to make, but I think I like this better. Going to make one of these babies and see!