Caps, mittens, socks and scarves are also modestly priced and a hit with many children. Old signs, serving trays, and posters are works of art in there own right. The company has a long tradition of using famous artists to create holiday themed art for its marketing items. These items are highly sought after jewels in many collectors' collections. Old wooden or metal signs, in near mint condition, are considered valuable and rare finds. You can also add Coca-Cola collectibles to other kinds of collections, such as a logo mug with a special theme to someone who collects mugs.