Nestable and stackable storage bins

A storage bin comprising:

• a plurality of sidewalls and a bottom wall that together define an interior region of the storage bin, the storage bin having an open top;
• and
• a plurality of bump-ins formed in at least some of the sidewalls of the storage bin and protruding into the interior region of the storage bin, the bump-ins forming support columns protruding into the interior region of the storage bin and corresponding recesses as viewed from the exterior of the storage bin, the bump-ins extending vertically into the bottom wall of the storage bin and the support columns having support surfaces at upper ends thereof, wherein, for a pair of the storage bins, the sidewalls, the bottom wall, and the bump-ins are structured and arranged such that:
• a top storage bin can be lowered into and nested within a bottom storage bin through the open top of the bottom storage bin, with the support columns of the bottom storage bin accommodated within the recesses of the top storage bin, when the top storage bin and the bottom storage bin are oriented the same way relative to each other;
• and
• when the top storage bin is rotated about a vertical axis to a different orientation relative to the bottom storage bin, a lower portion of the top storage bin fits partially down into the open top of the bottom storage bin until regions of said lower portion of the top storage bin rest on the support surfaces provided by the support columns of the bottom storage bin, whereby the top storage bin is stably stacked on the bottom storage bin at a stacking position that is higher than a nesting position.