A really cool non-profit organization linking visitors with organic farms/farmers from around the world that will host you in exchange helping or working on their farm. You get to learn about agro-ecological and sustainable farming methods through hands-on experience and your host offers accommodation and meals with no money exchanged (just your helping hands!).
This is a great way to travel the world for a very low cost (just cover your transportation there), learn about organic food, agriculture, and sustainable ways of living, and meet local people, make new friends and create new connections with the land.
Sign up, find a destination, get linked up with local farm, then start your experience!