Look at this project titled Brawn & Bread: an outdoor gym that makes bread, using human power to process the grain, knead dough, and fuel a wood-fired oven. It was designed by the London based designers Studio MICAT and was built in August 2018 by campers, aged 11-17, at Beam Camp, New Hampshire. The structure is designed to make a performance of the processes that go into producing a loaf of bread. It is a permanent installation at Beam Camp where it will provide daily bread for up to 150 campers and staff members. The bread gym is a small but salutary reminder of the effort required to produce this daily essential. How impressive!
Here a short film of it!