What were the overturned bevelled bowls found in prehistoric levels at Nineveh possibly used for?

In the prehistoric strata of Nineveh, archaeologists Mallowan and Thompson discovered roughly made bevelled bowls that were found overturned in the soil and filled with vegetable matter. It has been suggested that these bowls may have been intended as magical offerings designed to expel evil spirits from houses.1

While these specific findings at Nineveh are associated with that ritualistic interpretation, it is worth noting that bevelled-rim bowls found in southern Mesopotamia during the same period are widely believed to have been mass-produced for the distribution of food rations, serving as a standard unit of measure.2