Eco-friendly weblog The Daily Green details how to turn a cardboard box into a DIY solar oven for a little weekend fun in the sun. All you'll need is the box, some construction paper, tin foil ...

Just in time for a hot weekend, Kelly Franson shows us how to make our own solar s'more oven!

This will make the temperature inside the box hotter than the temperature outside of the box. Eventually when temperatures inside of the cardboard box get warm enough, it will act as an oven and ...

Build the Oven: Cut a flap out of the top of a cardboard box and cover it with aluminum foil. This reflective surface helps capture and direct sunlight into the box.

If you're of the microwaves-be-damned, I-want-to-do-it-myself school of thought, Instructables user z0rb details how to make a portable solar oven while "keeping with the grand tradition of ...

Explanation The pizza box solar oven can reach a temperature of more than 275 degrees, which is hot enough to cook food and kill germs in water.