Make a Solar Water Heater for Under $5 "A word of warning, this panel works VERY WELL. We tested it on a very sunny day and within seconds the water coming out of the panel was hot enough TO SCALD. I burned my fingers."
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 build one you could use old bottles or what ever you have available.