This website is full of 3rd world compatible designs to solve problems such as pumps, Showers, Hydram, Weaving, and flood control. They use tools and materials commonly used or accessible to 3rd world residents.
Frankly, several of their designs will prove useful to me in America. The weaver seat is brilliant and should solve my sore knee problem when I make rope and a few other chores.
Their waterpump design will serve me well for getting water from a well/cistern to my hugelkulture that is going in.