"I tinkered for a long time and eventually settled on the penny stove:
http://lmgtfy.com/?q=penny+alcohol+stove"

Have you had any problems with your penny stove? What kind of boil times have you experienced? I've read of some really amazing boil times with the penny stove.

I've been considering the penny stove myself, but have heard that there is risk of the pressure forcing the penny off the stove if the stove isn't constructed just right.