i read a article a while back(i cant find it now)about making a small portable heater out of a coffe can? if i remember right it said to put a roll of toilet paper in a coffe can(1 lb can worked best it said)and you pour in a whole bottle of rubbing alchohol at least 70% pure or it wouldnt burn,and let the paper soak up the alchohol for a while and light it up.the article said it would burn for several hours and put off good heat. my question is has anyone tried one of these, and do you poke a hole anywhere in the can to draw air? thx for any replies