Understand the limitations of solar water heating. The best systems are one third more economical when compared to energy efficient electric water heaters. Don't assume that early morning showers involve only cold water. The water in the tank should stay hot for at least 24 hours.
DIY – Do it yourself solar elipse viewing glasses. NOTE: This is NOT tinfoil. Please make sure you are using a proper solar viewing film from an astronomy store.
Humans have taken advantage of the sun's heat for thousands of years. A lot of energy can be saved by drying your clothes outdoors in sunny weather. This cuts down a lot on the energy used to dry your clothing in an electric or gas clothes dryer, and linens dried outside smell great.