>>2499691Coke can alcohol stove. I've built a couple. Can't get lighter weight or more efficient than that. But they are a bit fragile so you gotta baby them more than a steel stove.
Which brings me to my next point, Asian and Mexican drinks frequently still use steel cans. Find a good steel can like Mr. Brown coffee make a stove. It'll be much more durable and cost you the price of a drink.