The Guatemalan village of San Andrés Itzapa, Guatemala, runs mainly on bicimaquinas: pedal-powered machines such as water pumps, grinders, and threshers constructed from donated bikes and local materials. Working with the non-government organization Maya Pedal, as well as local agricultural cooperatives, you'll collect, disassemble, and rebuild these bikes into devices that make it simpler for villagers to independently haul cargo, blend smoothies, thresh corn, and shell coffee beans. Simultaneously, you’ll help improve the local economy by lowering energy costs and increasing overall production.
You Need: Self-motivation. Unlike the other volunteer vacations listed, this is not an organized package. Volunteers need to get themselves to San Andrés Itzapa by their own means, and should have relevant experience (i.e. fixing bikes) along with basic Spanish comprehension. The longer you can stay, the better. ($9 shelter fee every two weeks; mayapedal.org<)