(me too thank goodness or my day would have been even more sad)
Take out all the whole coffee beans and start sorting them after size, color etc. on the floor in the middle of the store and give people weird looks and shoo them away if they are asking any questions. If you get caught, start throwing the beans after the staff.
Take out one of the water slides, put in up in the middle of store so it stretches to the queue. Then grab mountain dew and doritos and slide down naked while throwing 'dew and doritos on random people.
Ask people if they want a clinically proven to work hair treatment. Regardless if they say yes or no, lead them over to a chair and start talking to them. The 'hair treatment' would be a mixture of maple syrup, (what a waste of perfectly good syrup!) pancake mix, corn, water, green beans, tomatoes, pickle juice, and eggs.