1.) Start a band using large cans of green beans and other food items as your intsruments. See how many people you can get to join.
2.)If you get a good band set up, put out a hat and try to make money, see how much you can make.
3.) Get as many samples as you can before you get thrown out.
4.) Go up to other shoppers randomly and say "i like (insert food item name here)"
5.) Browse through other shoppers carts, taking things you find appealing, later go up to the person and ask if you can return this item to them for full refund.