Fat Brain Toys | Air Toobz - Switch AccessorySwitch things up! The knob controls a paddle that directs the airflow either left or right. You can use it to alternate between two different paths. Or, if you want to make things interesting, try building a loop with a single exit it's a fun challenge flipping the switch back and forth until you get the ball through the exit. The winds of change are under your control with the Air Toobz Switch! AirToobz Switch Directional switch to add to your Air