Building A Solar Oven
A simple solar oven can be built for less than $20.00 since it can be made out of cardboard and other items you can find laying around. To build your own solar oven, you will need several cardboard boxes of various sizes, a good bottle of glue (a paste stick will not work), a roll of heavy-duty 18 inch wide aluminum foil and a piece of glass (can also be Plexiglas).
You will also need a can of flat black paint, 3/8 inch wide elastic band (get from a sewing or crafts store), a small black tin, a bit of cotton cloth as well as some string.