Vertical wind turbine. It works from any direction. I'd have several.
Natura Levo Wind Turbine : Vertical Axis Turbine To Catch The Wind by Laura Sink
DIY CNC: Build Your Own CNC, CNC Router, or 3D Printer
Homemade TIG Welder Plans | My Homemade TIG welder-img_1153-jpg
router master space saver 52 4ftX10ft cnc machine year 2000
Poor man's CNC edge finder
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pantograph that can be used with dremel with 2:1 or 3:1 ratios. https://3dwarehouse.sketchup.com/model.html?id=ub7019ce4-41a8-4e34-a399-f4df839e9fdd
Pipe Chain Clamps 3rd 4th and 5th hands nice