Abstract: A novelty bottle cap-toy top which, may be used to seal a bottle and/or a toy top. The bottle cap-toy top comprises a hollow shell of generally semi-spherical configuration and a stem. The hollow shell has a top flat outer surface and opposite thereto a lower opening through which there is an inwardly extending sealing portion adapted to engage and seal the throat of a bottle. The stem, generally perpendicular to both the top flat outer surface and the plane of the lower opening, extends from the interior of the cap, through the opening, and outwardly therefrom. When the cap, top flat portion down, is spun by the stem on a horizontal surface, the cap will rotate out of its central axis through ever larger circles until the end of the stem contacts the horizontal surface causing the cap to jump into an inverted position and spin on the tip of the stem. As the spinning slows, the top falls, rolls on its surface and comes to rest on the top flat face.