For this toy children will place it on a wall or ceiling, and turn the switch on. This will cause the headlights to light up, motor to move the wheel of suction cups and to cause the speaker to beep or make other noises.
The principle that this toy is based on is gravity, and weight. The suctions cups will have to provide enough force so that the toy is able to not fall from the wall it is climbing.
The most expensive part of construction will probably be the electric motor and circuitry that will be in the toy. The headlights, speaker and motor will all be wired to a battery and the motor will be connected to the spinning wheel of suctions cups, which will have to be created from a mold specifically made for this toy.
The body of the toy will be made of a light rubber due to its nature. It will have to be low weight and high durability becuase it has the chance to fall from heights.
There will be small parts in this toy so it will be ages 5+ and there is a chance it will fall off the surface it is climbing so children should not stand directly under the toy while it is in motion.