A corrugated cardboard delivery box has a bottom wall, side walls front and rear walls and a pair of foldable lids, and an electronic piano is put in the delivery box together with pads in such a manner that the bottom board of the piano body is faced to the bottom wall; perforated lines are formed along the periphery of the bottom wall; when the package arrives at a purchaser's home, the deliveryman directs the bottom wall sideways, and detaches most of the bottom wall on the perforated lines by strongly pressing the periphery of the bottom wall so that the deliveryman can attach the legs to the piano body without taking out the piano body from the delivery box before taking out the piano body from the delivery box.

A container for storing and displaying produce made from a blank having a variety of side panels, top panels, and bottom panels. The various side panels are arranged such that one of the side panels and its associated top panel are attached to the adjoining side panels via separable perforation lines. Additionally, the two major top panels or designed to form an overlap area that helps prevent any sealing elements from contact any other panels thereby affecting the opening aspect of this container. As such, the top panel and the side panel may be easily pulled away from the rest of the container thereby providing easy access to the contents container therein. Once pulled away from the rest of the container, the top panel and the side panel may be folded around such that they form a leaning support for the container or removed altogether.