ADN

My favorite thing to do to friends/family on a trip to Walmart/KMart is to take the magnetic strip out of a CD/DVD box (security tabs) and take it back into the store with me. While in hardware find a magnetic striplight or anything with a magnet on it. Rub the magnet on the security tab about 4 or 5 times then drop it into someone's purse or jacket pocket.

Let them precede you out the store so you can enjoy the excitement.