Using wikis and digital fabrication tools, TED Fellow Marcin Jakubowski is open-sourcing the blueprints for 50 farm machines, allowing anyone to build their own tractor or harvester from scratch. And that's only the first step in a project to write an instruction set for an entire self-sustaining village (starting cost: $10,000).
Open Source Ecology. (2017). Machines : Index. [online] Available at: http://opensourceecology.org/gvcs/gvcs-machine-index/ [Accessed 18 Oct. 2017].