In 2001, a Canadian inventor Jake B. Jock Brandis designed a hand-powered peanut sheller for a village in Marley Mali. In one hour, it can shell about 56 kilograms of peanuts.

• 花生或落花生是许多发展中国家的重要农作物，但不用机器剥花生壳是一件很麻烦的事。