A case assembly kit for assembling a case of any chosen dimensions from a plurality of separate components includes a series of panels which are cut to chosen dimensions to form the bottom, side and end walls of a box-like, open top enclosure base and the top, side and end walls of a similar box-like lid. The kit further includes a series of angled corner strips for connecting adjacent edges of the bottom, side and end wall panels of the base and top, side and end wall panels of the lid, and mateable closure strips for securing along the opposed peripheral upper and lower edges, respectively, of the base and lid. Hinge devices are provided for hinging the lid along one edge to the base, and a latching mechanism is provided for releasably closing the lid. All the separate parts are securable together by bonding.