IF (and that's a big IF) you go school shopping, go at 9 am on Saturday to your favorite store.
Crazy people are still in bed then. Your cart is safe.
Cashiers are perfectly happy to accept Visa to pay for hundreds of dollars worth of crayons and glue.
FYI, 5 year old DS came downstairs this morning, wearing his brand-new Bakugan backpack...excited for school. Except it doesn't start until Wednesday. He was bummed when I told him that.