"I'm Working My Business"

Today JuJu gave you an old printing adding machine that you absolutely love. You pretend it’s your cash register, it printed trolley tickets, and whatever else you can think up. Well I was unloading the dish washer in the kitchen where you were set up playing. You told me, “Mommy, be quiet with those plates, I’m working my business.” It was so funny! Where do you get this stuff?