Bar you say? Richard Sanders Extreme Burn 2.0. Get it. Without a doubt the most mind-blowing, natural, perfect reason to be doing this trick, out of nowhere rep maker you'll ever own.
I wrote a reply to someone in this forum months ago about how I like to perform it, and I don't want to post it all again. Suffice it to say you can use it at any checkout situation and it is an absolute killer.
Of course there are many great things that fit your request (indeed a good book is a great value), but if you're looking for a clean, incredibly visual close up that is brought into play in the most natural way possible, in public, in bars, stores, restaurants, Extreme Burn 2.0 can't be beat IMHO. You WILL create that special "real magic" memorable moment which people will talk about for years to their friends, family, and coworkers.
If ya cant tell, this is a now very polished go-to I just love because I know it slays. They never see it coming, and you can take them on an emotional rollercoaster climaxing with relief and "pure magic" to the rescue.
Good luck! If ya go with Extreme Burn lemme know and I'll share a routine I've developed that I know you'll love and use over and over.
Go find it performed by Richard Sanders and see if it's something in your wheelhouse.