Board book, with hand puppet attached to extended back cover Board book, with foil mirror attached to inside back cover Board book with sound effects from panel attached to extended back cover Board book with squeaky nose attached to inside back cover Board book with electronic sounds from panel attached to extended back cover Sound effect module attached to extended back cover Board book with electronic sounds from panel attached to extended back cover. Sound module attached to extended back cover Sound moduel attached to extended back cover Board book with electronic sounds, on plastic panel attached to extended back cover