text: get a thin metal washer, tie a long string on to it and put it on a table and put a table cloth over it, put a marble in the center of the washer (washer under cloth, marble on top of cloth)  and during the act use your magic wand to move the marble (your assitant that the people don't see will be pullin the string moving the washer which the  marble is sitting in so it looks like the marble moves on it own