A box is made by folding a sheet of material. Preferably, the box is formed by applying adhesive and folding using a machine, and a waterproof or water resistant coating is applied so that the box is configured for use as a cooler. The box includes (a) a storage portion, including a bottom panel, a first end panel, a second end panel, a first side panel, and a second side panel; (b) four corner panels; (c) a top panel including tabs; and (d) a latching panel attached to the first side panel and pivotable relative thereto about a fold line, the latching panel including first and second subpanels. The latching panel includes cuts extending between and dividing the first and second subpanels through which the tabs respectively extend when the cooler is in a closed position.

A tray may include a base panel, a front panel foldably connected to the base panel and including a front rim panel with a first end portion, and a side panel foldably connected to the base panel and including a side rim panel with a second end portion. A secondary panel may be foldably connected to the base panel and positioned between the front panel and the side panel. The secondary panel may include a corner rim panel at a distal region. The corner rim panel, the front rim panel, and the side rim panel may cooperate to form a contiguous rim that may extend along the front panel, the secondary panel, and the side panel. The first end portion and the second end portion may overlap the corner rim panel to reinforce the rim at the corner region.