Abstract: A panel which may be removably inserted into a nonrigid container, which container is comprised of at least one container wall defining a container opening. The panel is characterized at least in that it is formed from a material which is selected from a group consisting of polyvinyl chloride foam board and high impact polystyrene. Preferably, the device is rectangular and defines a centered aperture through each of its width-defining edge portions and a pair of spaced-apart apertures through each of its length-defining edge portions. Among the advantages provided by the device is that it may be repeatedly bent and inserted into a nonrigid container so that, upon release, the container may be retained in an upright and open position for easy access, all without breaking or cracking and without damaging the container either during retention of the container or during its removal therefrom.