Step 1: Materials
2. A ballon. The party kind.
3. A water bottle lid. The one you pull open and push shut.
4. Glue gun.
Step 2: Make It
Take the lid and glue it over the hole on the CD. Make sure you can open and close the lid and that air can go through it. Attach the ballon to the opening of the lid. The part you suck the water through.