Retired Mathematician Restores Log Cabin

Leather (if you’re also building some of the indoor furnishings, by yourself, to be a part of the new home….)

This is an optional material, usually. But if you do want to make this thing 100 % homemade, both internally and externally, then you can also make those couches, chairs, seat pads and more using fresh leather. It smells great, and it looks even better.