In the episode "Happily Ever After", when Piper vanquished the Evil Witch in the Fortress, she needed to get home. Hence, the Keeper of the Fairytales lent her the Ruby Slippers from "The Wizard of OZ" so that she could get back. When she arrived at the Manor safely, the Ruby Slippers disappeared, probably returning to its resting place.
- In the books, the shoes were originally silver. The ruby slippers come from the movie adaptation with Judy Garland as Dorothy.