I have been doing my version of the silk and purse routine (I first learned it from Patrick Page) for a long time. Recently — after the Brexit debate started — I switched to using the British flag, which makes it more entertaining and gets rid of the "small red silk" usually connected to the thumb tip.
Some have asked, here is the answer: "Where do I get the British Flag for the Purse Swindle routine?" Here:
It's a worker.