Lemonade Stand Slacking

Instead of taking a summer job, cute little Sarah's had an even better idea: she's opened her own lovely lemonade stand in the park! Well, since customers don't exactly queue up in front of her stand, not just yet, and waiting for them to show up before her counter tends to get quite boring, Sarah feels like slacking and having some fun in the sun, on her own. Would you help her slack and then warn her to get back to work, whenever a new customer approaches her stand? Help Sarah enjoy a fun “catch the falling lemons” type of game, apply a skin perfecting citrus-based mask on her face, shake a lemon tree in order to make all its juicy fruits fall on the ground, get her lips colored up in a neon yellow color and so on without getting caught, while slacking, by her customers?