Let us show you how to make an internal conbustion engine at home. It's not that you will be able to use it somethere, but it's going to be enough to wow your friends.
So, you're going to need a can, CD, some foam rubber, a couple of screws and a few clips.
Here's the can (we chose sprats in tomato sauce).
Eat the sprats and wash the can.
Take the foam rubber.
Cut out a circle. Make its diameter a couple of millimeters smaller than the diameter of the can, while its height should be a little more than the half of the height of the can.
Make a hole in the center of the cover for a connecting rod.