tricks that push the boundaries of what's possible with a deck of cards

and the spectator is allowed to say "stop" at any point

The Classic Angle One Hand Coin Switch (Rubinstein)

Then a silk is taken and made to disappear

or other similar objects

Gravitation On The Mat | Salvador Molano - (Download) Premium Magic tricks that push the boundariesWalk over to your magic mat and then slowly levitate into the air and the slowly back down again! You can pass a handkerchief under your feet or another object including your assistant's own. The imperceptible gimmick turns on and off. You don't have to take anything off or put anything on. The mat can be shown all around before starting and finishing it. You can look under your feet! Download and learn how to build and perform this legendary secret