If the sun is bright and you have a pizza box lying around, you may not have to rely on that loud beeping microwave or heating up the oven. To reheat last night's pizza, some simple modifications to the box and some of the sun's rays may be all you need to get that slice steaming again. To learn this trick, look at the video below.

To learn this trick, look at the video below.

While you need lots of supplies to make this work, the principle behind it is one worth learning if you want to make foods palatable without having to use up your fuel or electricity. The sun produces plenty of heat on its own, so why not make it work for you?

This would be a great trick if you wanted to heat up some food prior to your lunch so that it's nice and toasty when you finally get around to eating it.