A playhouse kit which includes a building constructed of melamine, white board or a wood or plastic product that when completely finished leaves a paintable outside surface and a clean, slick, nonporous inside surface. The motor is accommodated in the main housing and is configured to generate a driving force. A gate insulating layer is formed on the gate. The dielectric elements may be mounted on a radome that is otherwise transparent to the radiation pattern, or otherwise suspended at or near the near-field boundary of the antenna.