A portable supply container with a concave upwardly open bottom shell, a cover hinged to one side of the bottom shell and adapted to selectively cover the opening the bottom shell, and a downwardly facing concave top shell. The top shell has a first portion secured to the cover along one end and two sides, and a second portion connected to the first portion by a transverse hinge between the two sides. A first releasable connection is provided between the cover and the bottom shell on the other side of the bottom shell, and a second releasable connection is provided between the top shell second portion and the cover on the other end. The outer surface of the bottom shell has a non-slip surface having a different tactile feel than the outer surface of the top shell.