A 35-kg public dustbin with three modules – a solar trash crusher, a level communicator and a solar street light – was designed by 15-year-old Priyanka Mathikshara of Chennai during a residency programme for 10 young innovators at Rashtrapati Bhavan in March 2015. The dustbin crushes garbage allowing maximum capacity usage. Once full, it sends a message to the nearby dump yard to empty it so that there is no overflowing of garbage. It also features a WiFi system and CCTV camera.