Hydronic radiant floor heating systems use solar energy collected from a homes pre-existing solar panels to heat water and send it through tubes under floor- HEATED FLOORS would be perfect for bathroom
DIY Solar Water Heater From Plastic Bottles - Make a solar water heater from a pile of plastic bottles and cartons. This is great for the environment as it frees up waste trash and if you decide to bu(Plastic Bottle Ideas)
A bit dramatic for a tiny house but above the bed would be awesome While it looks like a greenhouse, this coastal home in California, built by Mickey Muennig, has a removable window which helps keep the place cool.
How To Make Your Own Hydro Power - Power by the movement of water is genius, if you have a huge river or stream you could generate a literal off the grid system, but what if you live with a small creek or a slow flowing body of water?