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 . a removable cover for closing the rim open top having an inverted u - shaped clamping member with an interior leg and an exterior leg and a bight spanning the top edge , the surface of the exterior leg facing the rim having a plurality of spaced apart grooves therein forming a second set of teeth for interlocking relationship with the first set of teeth , the other surface of said exterior leg being in contact with at least some of the circumferentially spaced apart wall sections . the cover may be metal or plastic .