Abstract: A funnel has a cylindrical upper first section with a first axial height and a first diameter, a cylindrical lower second section with a second axial height and a second diameter, and a frusto-conical intermediate section coupling the upper and lower sections and having a third axial height. Each of a plurality of similarly configured housings has a hollow cylindrical configuration forming cylindrical chambers, a housing axial height, a housing diameter, an upper end coupled to the intermediate section closer to the second section than to the first section, and a housing lower end at an elevation beneath the intermediate section laterally spaced from an upper extent of the second section. Each housing is adapted to removably receive and frictionally retain a magnet.