More ideas from tlapa
This is Amazing! Solar room heater gives free heat all winter and doubles as a solar oven.

Cool DIY Video: How to build a Window Attached Solar heater that gives “USABLE HEAT” all winter and acts as Solar Oven as Well !

Орехокол из дерева раскалывает грецкие орехи

Орехокол из дерева раскалывает грецкие орехи