If you lend a movie, CD or game to a friend and get it back with scratches, it isn’t necessarily cause for rage. With the right technique you can easily remove the damage and have the disc playing as though it were new.
An ancient yet new-to-us post on Wise Bread tries out several ways to do it. Methods include filling in the scratches with toothpaste, a banana and metal polish, the latter of which the writer deems to be the most effective.
Here’s a video that explains how to get the job done:
Quickly Remove Scratches From CDs and DVDs [Wise Bread]