Joy is a solar oven!
Joy is a solar oven! (Pic taken at SMK Dr. Burhanuddin, Taiping, Perak. 2009) A solar oven is also known as a solar cooker. You can use it to heat up water and to cook and the best thing about it is it needs no fuel and cost nothing to run. As its name implies, the solar oven uses sunlight. You can make one using a pizza box!