Abstract: A product display device for an eyeglass retainer is provided including a body having an upper portion, a lower portion, and a mid-section. The lower portion includes a first side and a second side, wherein the first side and the second side of the lower portion each connect to a respective first side and second side of the mid-section forming an opening between the lower portion and the mid-section. The mid-section includes one or more edge portions extending into the opening, the one or more edge portions are configured to associate with an inferior surface of a bottle cap. The product display device may include two or more prongs, spaced from one another, and depending from the body. Each of the two or more prongs includes a first end and a second end, wherein the first end of each prong associates with the body, and the second end of each prong is configured to retain an end of an eyeglass retainer.