Abstract: A flat box blank and a method of folding the box blank to construct boxes or similar packaging of various sizes without having to use adhesives or fasteners and without requiring any special tools or skill. The box blank includes a back, top, bottom, front and opposite side walls and fold lines running therebetween along which the blank is folded during construction of the box. The top of the box is rotated relative to the side walls thereof so as to have an open configuration, at which items can be placed into or removed from the box, and a closed configuration at which to prevent a loss of the items being stored and carried within the box. Once constructed, the box of the present invention is ideally suited for carrying business cards, food items, and the like, depending upon the particular size of box.