MakeHeat

People have been making these for years, some have been making a living at it: recycling soda cans in a green way. CanSolair was made by a Canadian inventor, and his business is expanding. Seems the 270+ cans it would take to make your own are much easier to come by all pre-packaged in a nice solar air heater that you don’t have to make yourself. Of course, that’s why I buy prepackaged LED lights nowadays too, except for the expensive ones, which I still either wait for or build myself. See the story at:
http://cbs4denver.com/green/pop.cans.solar.2.912499.html and at http://cbs4denver.com/services/popoff.aspx?categoryId=143&videoId=52025@kcnc.dayport.com&videoPlayStatus=false&videoStoryIds=52025@kcnc.dayport.com&videoTime=&