Speaking of little cabins, there is this aussie kid, a young man, does these videos called Primitive Technology, somewhere out there in the bush. It is really cool. He shows how to make cement from wood ash and conglomerate like broken pottery, makes bricks, little huts, the entire thing from scratch. I am trying to do a bunch of that stuff too. Am making a cellar of sorts to keep stuff from freezing, just need lumber to frame in doors for that part. I use sheet metal for roofs on structures though, this kid does it all like old school.