Post here if you are in any way into alternative energy! Bonus points for frugality - thousands of dollars worth of solar panels or a personal wind turbine don't count. Today I made my first solar oven out of - an old pizza box! Plus duct tape, clear plastic wrap, black spray paint for the inside, aluminum foil, a stick and some string to adjust the panel. Tested it earlier with a thermometer. Starting temp - 20C. Around 1/2 hour later, inside temp was 60C! Then cloud cover came and spoiled the fun. I've seen these on youtube and some professional type ones for sale for around $200. Well, I don't have $200 to spare but I had to know if it worked. Now I'm going to draw up plans for a proper one.