Apr 28, 2019· DIY Wind Turbine Ideas for Free and Green Energy Source . 1. $30 DIY Wind Turbine | A homesteader who never throws reusable stuff away sure can build this DIY wind turbine. If you're the crafty kind, you can do this for $30 and even less. Follow the full details and the step-by-step guide here to build this wind turbine at a minimal cost.