I once saw a house sided with bottle caps, another with sea shells. In some parts of the US hoses are made from bales of straw, and some of sod. Around here a few have been buried into a hillside with only the front visible. Also, "manufactured" homes are becoming more popular.
I recall that "Granny Flats" are common in Australia. (These "cardboard" houses could serve that need.)
I agree.... sounds like a good idea.
Angeline
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