Ultralight Tuna Can Stove

This is a similar stove that I found on Pinterest. 

This video shows a simple tuna can stove in action. Easy to make and reliable, the tuna can stove is based on alcohol burning marine stoves that you might find on a sailboat in the 1970's. Many ultralight backpackers (like me) use this stove in all, but snowy, conditions.

Pros: cheap, easy to construct

Cons: slow to boil water, dangerous, heat is difficult to adjust

This  burns denatured alcohol. I use empty hydrogen peroxide bottles to carry my denatured alcohol while in the backcountry.