How to Make a Thin Hovercraft
- 1). Glue the pop-top water-bottle lid over the center hole of the CD and let dry.
- 2). Slip the mouth of the balloon over the pop-top lid.
- 3). Open the pop-top lid and inflate the balloon by blowing air through the hole on the bottom of the CD.
- 4). Close the lid by pressing it closed through the wall of the balloon.
- 5). Launch the hovercraft by opening the lid and pushing the hovercraft across a flat, smooth surface.