Fed up with the people in your life always leaving the toilet seat up? Petty Potty is a non-intrusive addition to any household toilet. Using Arduino-powered sensors, Petty Potty can detect when the toilet seat is left up after use. If the seat is not put down after 30 seconds, Petty Potty surprises the violator with a gut-wrenching scream from its hidden and powerful speaker. Instead of designing a toilet that automatically lowers the seat, we wanted to create a product that disciplines users to change their inconsiderate habits over time. As people who experience the seat being left up by others, Petty Potty is a humorous approach to provide commentary on this simple but frustrating issue.