The present invention is a container having either a circular, rectangular or square profile including at least one longitudinal downwardly curved extension that extends at least partway around the periphery of the container, at or near the base of the container side wall. The longitudinal downwardly curved extension includes a gap along its length and the gap is located between the side wall of the container and the bottom of the longitudinal downwardly curved extension. A longitudinal projection extends at least partway around the periphery of the container at or near the top of the container side wall. nin
