Original Purpose: Brightening your pearly whites.
Aha! Use: Buffing scratches from CDs that skip. Apply a small dot of toothpaste (not gel) to a cotton pad. Rub in a straight line from the center of the CD outward and over the scratch. Rinse off the toothpaste with water.
Reward: Your heart, not the CD, will skip a beat when Sinatra sings.