Abstract: A container having a generally cylindrical body closed at the bottom and open at the top with a container rim having a top edge defining an open top and two spaced apart downwardly extending legs, means securing the top of said cylindrical body between the legs upon insertion of the body therebetween, circumferential spaced apart wall sections acting as retaining members exterior to and laterally spaced from the top edge, and a plurality of spaced apart grooves in the exterior surface of the rim near and parallel to the top edge forming a first set of teeth.