Place 3 to 4 strips of masking tape over the center of the pinwheel. Insert the shaft of a small motor and cover the end of the shaft with a cap, piece of cork, or a small blob of clay. Connect the motor wires to the light bulb with alligator clip leads. Hold the pinwheel in front of a fan and witness the lighting of the bulb!
Sanding the can will allow the paint to adhere to the surface.