A mouse or other hand-held computer pointing andor input device is equipped with one or more elastomeric dome switches. A conformal coating comprises an insulating layer and a conducting layer containing electrically conductive material. The invention is in particular useful for generating a primary binary signal which is used in the lead-in area of an optical record carrier where a wobble is used in the secondary binary signal for storing a wobble key. The surgical screw implant is secured to the housing using a mating feature in the surgical screw implant. The track say may include at least two selectively positionable track arms each with a toy vehicle launcher, each track arm further defining a vehicle pathway, where each track arm may be positioned in at least an extended play configuration and a folded storage configuration.