Sears' toy catalog, pg. 186, has a $29.99 toy called Zap Trap. It might be used on a PD table at a health fair. Maneuver an electric wand through the maze of chrome. Correlate this toy activity to PD hand tremor as a table talking point about PD. I have had an electronic scoreboard company make a large version, gratis, for our group's use.It has large attention-getting red electronic numbers to tabulate misses, i.e., when the wand touches the convoluted wire. There use to be a toy called Shakey Jake. If anyone has this toy, let me know.