After reading this post, and going back and doing a search on previous ETS posts in regards to alcohol stoves, I built a few Super Cats over the weekend (I have lots of cats so plenty of empty cans to experiment on).

I was amazed at the output and the simplicity to build. Durability is an issue, but for the weight, if all you do is boil water, for instance, I don't think they can be beat.

Just google "alcohol stove" and you can find dozens of designs. The zenstove.net website is great for downloading hole templates and also has the designs of many of the most popular versions.