I use these easy to make solar ovens all the time when I am camping to cook biscuits etc. they are great an don a sunny day can cook almost as fast as an energy wasting oven.
Step 1: Gather your supplies
You will need
-1 Pizza Box (or two to make a deeper one)
-Some aluminum foil (i used heavy duty)
-tape or fencing wire
Box cutter, scissors, or razor blade it doesn't really matter (OPTIONAL)
By the way....... You could get your pizza box for FREE if you go to a local pizzeria and just ask for a box.