A drinking container system, comprising in combination: a container (310; 410) having a fluid containing chamber; said container (310; 410) having an outer surface surrounding said fluid containing chamber; said container (310; 410) having a neck with an opening therein providing access to said fluid containing chamber; a lid adapted to removably attach to said neck of said container (310; 410) to at least partially close said opening in said neck of said container (310; 410); a two-part coupling pair (40, 312; 40, 414) including a lid portion that is separate from a container portion,; said lid portion and said container portion (312; 414) of said coupling pair adapted to removably attach to each other; said lid portion of said two-part coupling pair anchored to said lid; said container portion (312; 414) of said coupling pair anchored to said container (310; 410); said container portion (312; 414) of said coupling pair located on a portion of said outer surface of said container spaced from said opening in said neck; wherein said lid portion and said container portion (312; 414) include at least one magnet therebetween configured to provide an attraction force between said separate portions of said two-part coupling pair; wherein said two-part coupling pair (40, 312; 40, 414) includes one magnet and one ferromagnetic material which exhibits an attractive force toward said magnet when placed in proximity to said magnet; characterized in that the container portion (312; 414) is formed at least partially of a ferromagnetic material anchored to other portions of said container (310; 410) and in that the container portion comprises the entire outer surface of the container. a container (310; 410) having a fluid containing chamber; said container (310; 410) having an outer surface surrounding said fluid containing chamber; said container (310; 410) having a neck with an opening therein providing access to said fluid containing chamber; a lid adapted to removably attach to said neck of said container (310; 410) to at least partially close said opening in said neck of said container (310; 410); a two-part coupling pair (40, 312; 40, 414) including a lid portion that is separate from a container portion,; said lid portion and said container portion (312; 414) of said coupling pair adapted to removably attach to each other; said lid portion of said two-part coupling pair anchored to said lid; said container portion (312; 414) of said coupling pair anchored to said container (310; 410); said container portion (312; 414) of said coupling pair located on a portion of said outer surface of said container spaced from said opening in said neck; wherein said lid portion and said container portion (312; 414) include at least one magnet therebetween configured to provide an attraction force between said separate portions of said two-part coupling pair; wherein said two-part coupling pair (40, 312; 40, 414) includes one magnet and one ferromagnetic material which exhibits an attractive force toward said magnet when placed in proximity to said magnet; characterized in that the container portion (312; 414) is formed at least partially of a ferromagnetic material anchored to other portions of said container (310; 410) and in that the container portion comprises the entire outer surface of the container.