1363 Six-Pack Cereal Boxes. No, you cannot add milk to breakfast on this assortment, but you can have tons of fun putting them together and working up an appetite! Six individual cereal boxes make up this selection of childhood favorites – Lucky Charms, Cheerios, Honey Nut Cheerios, Cinnamon Toast Crunch, Cocoa Puffs and Trix. Each 100-piece puzzle will have a finished size of 9” x 7” (and, of course, the pieces will be a little smaller than our usual piece size). Great as a set or individually as gifts! General Mills.