set all the radios in the store to the same channel then take an itrip and set it to something really innapropriate, like sex noises and see what happens. also, hide random boxes of popsicles everywhere put out of order signs on the bathroom doors try to actually camp in one of their tents act really suspicious like you're trying to shop lift as you are leaving(preferably when you are not) and get caught, then file a complaint for harassment. I can't think of anymore
You can alter 13 alot. Including accusing them that they were the person who stole your dog, and that they also work in the shop, and tell them you want them to carry your stuff around.
16. Ride a display bicycle through the store; claim you are taking it for a test drive. lol good one. I used to do something in Grocery stores when I was a kid. I'd hide behind the giant rolls of paper towels..like the huge ones..then when someone walked by, I'd jump out and scare them..lol.