Hand pump for water in a fresh water well. Old school building knowledge example mortice and tennon joints dove tails for a poplar cabin. Basket making. Knowledge of trees and the uses of them such as burch bark and poplar bark for baskets and hickory bark soaked for making string. White oak wood peels apart to make baskets. Dogwood for arrows. Oak bark for water proof vegetable tan on furs.. Pine for pine tar. You can eat pine bark when cooked make tea from the needles. Sycamore for chair seats. Black smithing tools, forge.