DutchTub, wood fired hot tub. Designed by Floris Schoonderbeek.
http://ecoble.com/2008/12/02/7-offbe...d-innovations/
Hey! I love this idea. Fill it with water and start a fire. It would be better indoors where it would warm your house and heat a tub of water for your bath at the same time. The water is great for retaining the heat and distributing it, while humidifying the house. You can put a girl in the tub as well.