Our group made a flushing toilet for the robot activity using the motor from a hummingbird kit to spin and simulate flushing water. We used a motion sensor to trigger the motor to turn on and off when motion was detected. The most challenging part was making the robot look presentable with all the different parts needed to assemble the flushing toilet mechanism and getting them to work together functionally. We overcame this by using two boxes, a long one atop a shorter wide one, cutting a hole for the toilet bowl in the top box and running wires through to spin the bowl.