This video illustrate us how to make a hovercraft with common household items. To build one, first of all, collect all of the items required for making it. You need a CD, bottle cap, balloon and super glue. Then start by applying glue to the lower end of the cap and sticking it to the center of the CD and let it dry. After it has dried, blow up the balloon and secure it up on the bottle cap tightly. Now open the bottle cap and let the balloon deflate.