Image by BreadnBadger via FlickrSolar ovens are cheap and easy to make and operate. I have been using solar ovens for two decades now, constructed from not much more than cardboard boxes and aluminum foil.
Cardboard ovens don't last forever, but they're so easy to make that I don't mind have to replace my old one every couple years.
I have even made a solar oven from an old pizza box, aluminum foil and saran wrap in a pinch. These are definitely not durable, but great to use in the short-term such as during a picnic or when you're camping. Just think, no stinky charcoal or lighter fluid to lug along!
For those who are looking for something that will last a long time (or if you simply don't have the time or temperment to make your own solar cooker, there are many commercial models available for purchase.
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