I always just pocket it as a joke, or switch it when searching for a marker

Saw someone years ago do a switch in a standup situation that was interesting.

He had a small rod, maybe 7 inches long, with an alligator clip on the end. He borrowed the bill and clipped onto the alligator clip and went back on stage holding up the rod with bill on the clip...ostensibly to keep the bill in view as a mater of fairness. What actually happened is at one point in heading back to the stage he simply reversed the rod an brought into view a dupe bill in another clip attached to the other end of the rod....and hide the spectator's bill in his hand to be removed later.

There are a million switches. Elliott Bresler explains at least a million or more in his outstanding "Switchcraft", specifically for a bill, there is some excellent information that builds on Jay Sankey's "Paperclipped" with some added thoughts by Christopher Taylor.

If you want to use a device, I have had good luck with Wayne Rogers "Automatic 2-way Prediction Envelope" (I have modified the envelope a bit so it can be prepared years in advance if you want and is a bit quicker with less "mess").

There is a new product by Kelvin Chow called "Quiver" that is always ready to go and very deceptive.

The nice thing about these two devices is that the spectator removes "their" bill which I feel greatly enhances the illusion - they will swear you never touched it - because you didn't!

There is really some good advice here.

Best

Steve

Well dude, what exactly is your handling then? I just asking because you've been given several options and have managed to find a problem with all of them. So please spell out exactly what effect it is you are doing? how you are getting into the effect? Explain exactly what your preferred ultimate bill switch move/handling should have/look like/not look like/etc. What are our bill parameters? What are the move parameters?