Free-Energy Devices, zero-point energy, and water as fuel
Cost of shipping a dimensional object ~5m wide makes this something to make 'on site'. A roll bender, 2" steel pipe and 6" pvc pipe are the main materials. The larger the diameter the higher the yield in the area.
Bondic is a liquid plastic welder that can be used to bond, fill in, or even build plastic, metal, and wood parts. Repair everything from toys to eyeglasses to jewelry. https://thegrommet.com/bondic
Discreet Wind Turbines ... now the neighbors can't complain!
Aspirador - esquema de coletor cônico ciclone / WoodCentral Articles: Introduction - Home-Made Cyclone Dust Collection System