Wouldn't it be cool if...?

"It's been so long ago that I don't remember the exact circumstances, but I do remember once thinking, Wouldn't it be cool if I could make a key move on its ring? Obsession ensued. What had at first seemed a simple matter quickly proved itself to be anything but. I experimented, I reasoned, I considered and rejected. Nothing would work. Well, that's not entirely true. I had limited success employing a variety of methods. But nothing matched my original vision of the effect. I seemed unable to make it into the simple effective miracle I wanted. Then one day I solved it!

Of course I'd experimented with the answer long before, but had never thought of using it in the way that suddenly occurred to me that day. It's hard to explain, but everything simply fell into place. It probably wasn't a day later that I had worked out a handling that, with only a few refinements, is the same as the one you're about to learn. As soon as I had the few moves down, I started doing it for people and haven't looked back since." - Jim Coles

Imagine, you show your hands empty front and back. You give a key on a key ring to the audience for examination. You take the key ring back and gently stroke the key.  Suddenly the key begins to move on its ring. It jerks and bobs as if manipulated by invisible fingers. It rises in an eerie fashion until it's extending horizontally from the ring. Then with a mere snap of your fingers the animation ceases. You give the key out for examination once more and show your hands to be unequivocally empty.