here is 2 ways to build  a solar can cheap the other "very cheap"

 heating is important but so is cooling.check out these cheap easy build a/c

 like what you 're learning so far? try this fridge it works  on zero electric

 need to cook,and out of propane?   Just try these video's and you'll be cooking

with the power of the sun in no time. parabolic solar cooking.see also solar ovens

these next videos are emaples of solar ovens. 

this solar pizza oven while useable in northern climates i believe was created in a southern climate. 


i put this one in becuse it worked in washington while there was still some ice outside.good for the more northern climates 

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