Articles are provided that in some embodiments comprise a convex front face, a first slot disposed along the left of the face and a second slot disposed along the right of the face. Therein, articles are configured so that the slots can receive opposite edges of a rigid cardstock item, such as a personal identification card, the cardstock item being insertable into the articles and the slots being configured to hold a surface present on such a cardstock item so inserted to be in contact with, and mechanically biased towards, said front face. Articles in some embodiments provided are attachable to headwear using conventional means such as adhesives and any suitable conventional hardware. In other embodiments are provided headwear, including hardhats and bump hats, which incorporate features of the articles provided. Additional embodiments of an article which will hold an identification card or other rigid card stock in the vertical (or portrait) orientation as well as in the horizontal (or landscape) orientation. The article may be comprised of a single construct and mounted onto the outer shell of various headwear or the article may be incorporated directly into the outer shell of various headwear.