An assembly comprising: a first beverage container comprising: a first vessel body, the first vessel body comprising: a first base having a first perimeter; a first side wall connected to the first base; and a first rim defined on the first side wall distal to the first base, the first side wall comprising a side wall median and a central section having a maximum circumference (C W) greater than a circumference (C B) of the first base, the maximum circumference located at a position on the first side wall between the side wall median and the first base; and a first lid having a first seal region, the first seal region removably attached to an upper surface of the first rim; a first material that adheres to the first seal region and the first rim so that the first seal region is removably attached to the first rim; and a second beverage container comprising: a second vessel body comprising: a second base having a second perimeter; a second side wall connected to the second base; and a second rim defined on the second side wall distal to the second base, wherein the first rim is releasably attached to the second base of the second beverage container such that the first lid of the first beverage container is interposed between the first rim of the first beverage container and the second base of the second beverage container; and a second lid having a second seal region, the second seal region removably attached to the second rim; and a second material that adheres to the second seal region and the second rim so that the second seal region is removably attached to the second rim. a first beverage container comprising: a first vessel body, the first vessel body comprising: a first base having a first perimeter; a first side wall connected to the first base; and a first rim defined on the first side wall distal to the first base, the first side wall comprising a side wall median and a central section having a maximum circumference (C W) greater than a circumference (C B) of the first base, the maximum circumference located at a position on the first side wall between the side wall median and the first base; and a first lid having a first seal region, the first seal region removably attached to an upper surface of the first rim; a first material that adheres to the first seal region and the first rim so that the first seal region is removably attached to the first rim; and a first vessel body, the first vessel body comprising: a first base having a first perimeter; a first side wall connected to the first base; and a first rim defined on the first side wall distal to the first base, the first side wall comprising a side wall median and a central section having a maximum circumference (C W) greater than a circumference (C B) of the first base, the maximum circumference located at a position on the first side wall between the side wall median and the first base; and a first base having a first perimeter; a first side wall connected to the first base; and a first rim defined on the first side wall distal to the first base, the first side wall comprising a side wall median and a central section having a maximum circumference (C W) greater than a circumference (C B) of the first base, the maximum circumference located at a position on the first side wall between the side wall median and the first base; and a first lid having a first seal region, the first seal region removably attached to an upper surface of the first rim; a first material that adheres to the first seal region and the first rim so that the first seal region is removably attached to the first rim; and a second beverage container comprising: a second vessel body comprising: a second base having a second perimeter; a second side wall connected to the second base; and a second rim defined on the second side wall distal to the second base, wherein the first rim is releasably attached to the second base of the second beverage container such that the first lid of the first beverage container is interposed between the first rim of the first beverage container and the second base of the second beverage container; and a second lid having a second seal region, the second seal region removably attached to the second rim; and a second material that adheres to the second seal region and the second rim so that the second seal region is removably attached to the second rim. a second vessel body comprising: a second base having a second perimeter; a second side wall connected to the second base; and a second rim defined on the second side wall distal to the second base, wherein the first rim is releasably attached to the second base of the second beverage container such that the first lid of the first beverage container is interposed between the first rim of the first beverage container and the second base of the second beverage container; and a second base having a second perimeter; a second side wall connected to the second base; and a second rim defined on the second side wall distal to the second base, wherein the first rim is releasably attached to the second base of the second beverage container such that the first lid of the first beverage container is interposed between the first rim of the first beverage container and the second base of the second beverage container; and a second lid having a second seal region, the second seal region removably attached to the second rim; and a second material that adheres to the second seal region and the second rim so that the second seal region is removably attached to the second rim.