To protect her seedlings from her dogs and local wildlife, @thecozycottagelife created this mini greenhouse with repurposed ...

These perfectly-usable panes need not end up in the landfill. Old windows can take on a second life as part of a DIY ...

which is made of aluminum frames and double glass windows with a 13 mm air layer. When the PV system produces more power than needed by the greenhouse, the surplus is injected into the grid.