QUOTE(Topher @ Oct 4 2007, 12:39 PM)

You can always rig up something with a popsicle stick and a pencil. Find the midpoint by putting identical quarters on either end, then take one off and put this ugly thing in it's place and you should easily see if it's lighter. (Yes, I used to be MacGyver. I can build a thermonuclear device with a couple of paper clips and some duct tape.)
Guess who can't find a popsicle stick anywhere