Always wanted to freeze a layer of liquid? Now with the Cool Freeze Foil Box you can. It is all made out of aluminum foil and can easily be made. This box is not high tech at all but it has a useful feature, the ability to suspend ice above the liquid to be frozen. It is not entirely the fastest way to freeze a liquid but is faster than just putting a liquid in a freezer. It will not completely freeze the sides of the liquid as it is made from aluminum.