Tiny Plunger by John Armstrong

As seen on Penn & Teller Fool Us

What do you get when three of magic's most innovative creators (Mathieu Bich, Jon Armstrong and Garrett Thomas) put their heads together? 

A Tiny Plunger!

This unsuspecting little prop becomes the feature of an amazing trick. The small plunger clings to a thought-of number of cards, finds a selection, and lots more! Based on a concept by Mathieu Bich, with additional ideas by Jon Armstrong and Garrett Thomas, Tiny Plunger is that rare prop that is at once funny, amazing, and memorable. Best of all, the routine is within the range of the beginner.