A shopping container device, including a first, storage bag-size, collapsible bag, having an open top and a closed bottom, a flexible, non-stretchable handle attached about the open top for carrying the bag when full, a second, smaller collapsible bag having a closed bottom and an openable top, with the top biased normally closed, a flexible tape joining the open top of the first bag to the inside of the second bag a short distance below its biased-closed top, the bottom of the second bag folded flat to form a short flap, the flap folded about one portion of a small ring and attached it itself to form a ring-holding closed loop and a normally closed, openable snap anchored to the ring for attachment to the user's vehicle ignition keys, the smaller second bag of an overall size sufficient to completely contain the first bag collapsed therein, and of a length sufficient to contain the ignition keys when the first bag is removed therefrom.