16 children's books; children's interactive books; children's books with encoded sound; children's books with interactive features; children's books with sound panels, children's books with interactive features, including sound panels, marker pens, stickers and wiping cloths, all sold as a unit; children's interactive books with pop-out features and sound panels; children's interactive books with magnetic wands; replacement cards on a variety of subjects for hand-held electric interactive question and answer games