Abstract: A unitary, foldable plastic box. The box has a bottom wall with a perimeter and at least three perimeter walls hingeably affixed to the perimeter of bottom wall with living hinges. A first attachment mechanism and second attachment mechanism complementary to the first attachment mechanism are provided on the perimeter walls. The first attachment mechanism has a tab with a protrusion, and the tab extends from at least one side edge of at least one perimeter wall. The second attachment mechanism has a relief and aperture formed in at least one perimeter wall. The relief and aperture are sized to engage the tab and protrusion of the first attachment mechanism. When the perimeter walls are brought together, the first attachment mechanism and second attachment mechanism can be detachably engaged together to form a box.