Hey not sure if this is of interest to anyone but these are fairly simple and cheap to build with a bit of know how and an expired bottle. (ozpig)
I've also seen an old copper water cylinder turned into a giant thermette as a cheap way to heat water for an outside bath but I don't have any pictures sorry, until I find an old cylinder at least.
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They gave me pumpkin ice cream. It was not pumpkin pie ice cream. Wiping my tongue on this tiny ad:
A rocket mass heater heats your home with one tenth the wood of a conventional wood stove
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