Props: 4 pencils with caps, a glass.
MAGIC:
It's a cute little trick, which you can present anywhere. Take four pencils and place them on a table. Ask the spectator to select any one pencil, when you turn back, and write his name on a piece of paper with it. After this, you collect all the pencils and keep every pencil over your forehead one after another to find out hte selected pencil with your magic power. Hey! presto!! Now you can show the pencil which was chosen by him. I am sure, any body who does not know this trick will think you are performing miracles.
SECRET:
In fact, you dont need to have any miracle powers (of course, you cant even). The secret is very simple. Before starting the show, make sure all the pencils have caps with points of the caps exactly right against the brand name of the pencils and start the show.
Ask the spectator to select a pencil and write his name; while he is doing so, you turn back. After writing his name, any spectator invariably keeps the cap back, but not exactly against the brand name of the pencil. That's enough to make you a magician. The rest depends upon actions like those of Yogi.