I made one of those pop-can stoves a couple of years ago, but haven't really put it to use. Regular 'white gas' stoves are just as easy to use, and you can regulate the flame (can't do that with the pop can). It takes 2 soda cans, tin snips and a drill with a small bit (3/32 or smaller if I remember right).

Make sure to use denatured alcohol ONLY. Isopropyl and other alcohols may contain impurities that will either cause the stove to burn too hot and melt the can(s) or leave a residue that will eventually clog the apertures.