A stool made by extinguishing a Swedish torch before it has burned out completely.
You need a log the size you want the stool.
Saw the log crosswise with a chain saw as deep as you want the legs to be.
Place some kindling at the bottom and light it up.
The chimney effect draws in oxygen so that even damp wood burns well!
Watch it burn and have a beer.
When your beer is finished, or maybe after your second one, extinguish the fire and turn over.