A storage accessory is configured for selective attachment to a wall support member. The storage accessory includes a hanging tab and a locking tab. The locking tab is movable between an unlocked position and a locked position. In the unlocked position, the locking tab is configured not to penetrate a groove in a wall support member and thus to allow removal of the hanging tab from a wall support member. In the locked position, the locking tab is configured to penetrate a groove in a wall support member and thus to prevent removal of the hanging tab from a wall support member.