PREDICTION BOOK

You borrow three items from the audience; a watch, a pen and a key.
You ask a spectator to pick one of the three items. Then you take a book titled PREDICTION BOOK and explain that the book is a magic book that knows in advance which item was going to be chosen.
You flip through the pages and as the pages are turned ;we see an animated hand come down and grab the item that the spectator previously chose!