This Pocket Chainsaw is made of high strength, heat-treated steel and is coated for rust resistance. It's so convenient it fits in shirt pocket. Cut through a tree, and then amputate that leg when the tree falls on you.
View inside an ancient Russian home during the century. Dugout shelters are perfect for staying cool in the summer and warm in the winter with a fireplace and chimney. The window is also the door. You could even plant a small garden on the roof.