I usually have my business cards in my pocket, and they are extremely visual, with one side being a very artful oil drawing and the name of my company on it. The information side also contains a small array of numbers at the bottom. When people ask what these are for, I tell them I'm going to show them, and tell them to look carefully at the numbers. I take the card, write down a prediction behind my back, and play out everything else with the sw**i which I always keep in my pocket.
It's a nice sales item, plus I teach them how to do the same thing with one digit, and then offer them more business cards to try at home. I'm pretty sure I've had at least one show booked using this method where they become my advertisers
