Build the circuit and connect the Bits in the following order: Power+Wire+Sound Trigger+DC Motor.
Build the C. Robot body out of wood and attach the circuit with the rubber band.
Attach a plastic disk to the DC Motor, and stick the wooden dowels into the disk.
Stick styrofoam balls to the ends of the wooden dowels. Make sure the styrofoam balls are touching the paint surface or canvas to ensure they make a mark. You can add a piece of wood to elevate the circuit body if necessary (Mika used a clothes pin).
Dip the styrofoam balls in your favorite paint colors and watch your C. Robot run in paint circles!