A container capable of being placed in a stacking configuration with an identical second container includes a bottom, a top rim defining an open top, and a sidewall contiguous with and extending between the bottom and the top rim to define an inner space. The container further includes a first curved structure forming at least part of the top rim adjacent a first sidewall side and a second curved structure forming at least part of the top rim adjacent a second sidewall side and disposed opposite the first curved structure. The container also includes first and second channels molded into the bottom and at least partially protruding into the inner space, the channels being substantially parallel to each other and to first and second sidewall ends, wherein a distance between the first and second channels is substantially equal to a first distance between the first and second curved structures.