[jasperab]

My "burn barrell" is an outside wood furnace and it will burn about anything with very little smoke.
When I had three teens at home they bitched in the spring when I quit using it for the season 'cause it also heated all our water. Three long hot showers, and there was still enough for my wife and I.
Came in handy when the hot water heater died and no bucks for a new one. Then come summer and we still had water warm enough for a shower when there was no fire. Seems like the black steel roof was gathering enough solar heat to make it warm enough to be comfortable. Kinda like 'Nam when we put a long, black hose on the tin roof of a hooch to get hot water.