Abstract: The organizer includes a normally planar, flexible internal member that tends to keep the organizer upright to permit easy access to the retained objects and to conform to the shape of the bag interior, making the organizer suitable for use with a large number of different size and shape bags. The organizer is provided with a light source with an actuation switch. In one embodiment, the light source is detachably mounted on the organizer so that it can be removed to illuminate the environment.