Vanishing a coin with a ring
Effect:
Here's an easy magic trick that
provides a great way to vanish a coin.
You show two rings, a playing card and
a coin that are sitting on a piece of
paper. If you like, you can borrow the
coin.
The rings and playing card are stacked
on top of the coin.
When a ring and the card are removed,
the coin has completely vanished. The
rings and card are stacked back onto
the coin and removed, and the coin
returns. There’s some preparation to
perform this one, but it’s visual and
ultra-easy to do.
Secret:
Here’s the secret which you’ll have to prepare ahead of time. You’ll notice that the
rings, card and coin are sitting on a piece of paper. You obtain a second sheet of the
same paper and cut a circle that is the same diameter as the second (gimmicked)
ring. This is glued onto the bottom of the second ring.
This figure shows how the circular piece of paper is glued to the bottom of the ring.
When you lay the ring on top of a coin, the matching paper that’s glued to the ring
covers the coin and makes it look as if the coin has vanished. It’s actually sitting
underneath the paper that’s attached to the ring.

You can purchase the rings from any hardware store. I found these rings for a little
more than a dollar a piece. If you like, you can perform this same trick using a clear
drinking glass and cover the gimmicked glass with a napkin.
Performance:
You stack the playing card on top of one ring.  Then stack the
second ring on top of the playing card.  The entire ring and card
assembly is moved on top of the coin.  When you remove the top
ring and card, the coin is shown to have completely disappeared.
 Stack the ring and card back on top of the coin and remove the
entire assembly, and the coin returns. The rings and playing card
are then laid onto the paper as they were at the start of the trick.