To provide pop-up items a plurality of individual sheet material structures are die-cut in composite sheet material consisting of a front sheet and a rear liner sheet of release-coated material joined together by having a pressure-sensitive adhesive (PSA) pattern between the rear surface of the front sheet and the front surface of the rear liner sheet so that, upon separating the sheets, PSA releases from the release-coated rear sheet and adheres to the front sheet in at least desired regions. Some pop-up structures are formed with small panels carrying PSA hinged about fold lines which panels are rotated 180.degree. to provide forward-facing subpanels having exposed PSA regions in the pop-up element. When the pop-up element is placed between a pair of hinged sheets, which may be facing panels of a folded basepiece, the PSA-carrying subpanels become affixed to facing surfaces of the panels, and upon pivoting of the sheets or panels to the open position, the pop-up element assumes an attention-attracting, 3-dimensional configuration.