This is an effect that I've been performing for since the late 90s! It's not so much of a working routine, it's something to do whilst you're sat down at a table or stood up at a bar.  The set up is incredibly easy and quick and it can be performed surrounded.  You can also set up right in front of everyone with being noticed.

This is a short download instruction video teaching you how to perform the effect and how to set it up.