Flight Case by Leo Smetsers

Imagine vanishing a spectator's ring. After some play-by-play you reach into a bag (which has been sitting on the table from the start) and remove a small padlocked Flight Case. Your spectator unlocks the box and inside is a single tea bag. You remove the tea bag and hand it to the spectator. Just imagine the reaction when they realize their ring is now inside the bag!

This is just one of the routines that are possible with Leo's Flight Case Prediction.