OK< not really mad science, but just madness. I was bored at work today(filling time cleaning .062mm PVC sheets with a rag), and realized that each PVC sheet gained a little static charge. I made four piles of said sheets, and placed a tiny scrap of cardboard in the center. The static charge caused the cardboard bit to stand on end , and changing the heights of the piles would cause it to point towards the taller pile(more charge). Then I was waving my hand over the piles, altering the magnetic field and moving the cardboard. The co-workers think I'm crazy, but it was enough to entertain me for a half-hour. Science? A little. Mad? A lot. Worthy of this thread? I thought so. The PVC/cardboard voltmeter will never be a big seller, I suppose.