Abstract: A greeting card with a compatible puzzle message including a visible opening first message, a visible outline to be completed as a second visible message compatible with the first message and means associated with the card to be used by the card recipient to complete the second compatible message within the visible outline.

Abstract: A book package of sheets including printed materials thereon comprised of printed writing of a connectible series of written expressions and a series of drawing illustrations compatible with the written expressions to allow the sheets to be chronologically and compatibly arranged in illustrated chronological form, a portion of the printed materials being printed in latent form which can be made visible with a marker included in the book package.

Abstract: A pen cap for a writing instrument barrel including a chamber defining inner housing adapted to snuggly receive a reduced nib carrying portion of the barrel and a spaced flow-through outer housing coextensive at the proximal end thereof with the inner housing to define a narrow passage therebetween with spaced radially extending rib members extending thereacross between the spaced inner and outer housing to strengthen the pen cap at the proximal end thereof.

Abstract: A learning association game wherein at least two series of images are visibly presented on at least one marking sheet with each of the images of one series being logically related to one of the images of the other series and with the images of each series being in different order to be selectively identified by a responding player with a marking instrument to visibly indicate indicia associated with at least one series of images, the game having a confirmation area associated therewith which includes the visible indicia and the correct invisible answers to be developed with the marking instrument.