A container device includes a skeleton having four vertical posts and four lower and four upper beams to be secured between end portions of the posts. Each of the posts includes a slot formed in one side and a groove in the other side of each of the end portions. A number of corner couplers each includes three extensions perpendicular to each other, for engaging into open ends of the beams and the posts. A number of insert panels are engaged into the end portions of the posts via the grooves of the posts and each includes a screw hole. A number of fasteners are engaged into the corner couplers, and threaded with the screw holes of the insert panels to secure the corner couplers and the beams and the posts together, and to form a parallelepiped container.