Today, when you order "Nickel Squeeze by Uday", you'll instantly be emailed a Penguin Magic gift certificate. You can spend it on anything you like at Penguin, just like cash. Just complete your order as normal, and within seconds you'll get an email with your gift certificate.
I love this little illusion! I use the quarter size chinese coins with square holes instead of
quarters and I printed a small spiral from the internet that I taped on the disk in the middle of
the illusion (with double sided tape). When you turn it, it looks like you are travelling through a
vortex. Using the chinese coins with a square hole opens the door to a lot of fun with "square
holes penetrating round holes" and talk about creating your own personal vortex. It is fun for kids
and adults. Personally, I have a few of these. I keep one on my office desk, one at home, and one
wrapped in a piece of chinese newspaper that I can drop in my pocket.