Patent ID: 8881938

Claim:
A lid for a container, comprising: a basin comprising a valley surrounded by a ridge; wherein the valley is defined by a length, a first end, a middle section, and a second end, the first end having a first width, the second end having a second width, and the middle section having a third width; wherein the first width is larger than the second width; wherein the third width is larger than the first width and the second width; wherein the ridge comprises (i) a first section of an outward-facing wall near the first end that intersects a horizontal plane at a first angle, (ii) a second section of the outward-facing wall near the second end that intersects the horizontal plane at a second angle, and (iii) a third section of the outward-facing wall near the middle section that intersects the horizontal plane at a third angle; wherein at least two of the first angle, second angle, and third angle are different from each other; and a first opening disposed on the valley and near the first width.