I saw a stove like this demonstrated by the Boy Scouts Of America. From what I am told, these mini stoves are common among hard core back-packers. I plan on trying this out and making one. You can get De-Natured Alcohol at camping stores, but you can probably get it cheaper at Home Depot.
>>Click this link to see how to make your own mini stove<<
WARNING: The flames from alcohol are practically invisible. Be careful that you do not get burned!