Patent ID: 8464896

Claim:
A container for holding non-pressurized liquids comprising: a. a watertight bottom; b. at least one watertight side; c. at least one structure attached to the exterior surface of said side; d. said structure being capable of retaining a cylindrical object in approximately vertical position; e. said structure having a height less than the height of said container; f. said structure being a generally semicircular protrusion; g. said protrusion having a vertically oriented circular hole; h. said hole being at least partially surrounded by the material of said structure; i. said circular hole being of about the same diameter as said cylindrical object; and j. wherein said circular hole is surrounded by the material of said structure only on the circumferential sides of said hole with respect to the axial line of said container; whereby said container may be paired with said retained cylinder by placing said cylinder such that said cylinder penetrates said structure via said circular hole.