TetraBIN (tetra bin.com) explores how today's technologies can be used to motivate positive change in urban environments. It uses gamified approaches – making use of game mechanics and game thinking – turn an activity traditionally considered trivial, such as depositing rubbish into a bin, into a joyful event. These approaches are designed to enhance the experience of interacting with urban furniture, with the goal of encouraging more active attitudes from people formerly partaking passively in a relatively insignificant activity. Steven Bai gave the presentation at Sydney Interactive Arts Meet-up event. His friend Sam Johnson also joined later during the last chapter of the presentation.