Blank Slate by Michael O'Brien (Instant Download)
Vanish a spectator's ring then magically produce it using only a blank card and a sharpie!
The magician borrows a ring from a spectator and tosses it away. He hen explains that you never truly know what you have until you lose it! He then draws a ring onto a blank card and magically the spectator's ring pops off of the card and the drawing disappears!