Plates are commonly made from ceramic materials such as bone china, porcelain, glazed earthenware, and stoneware, as well as other traditional materials like, glass, wood or metal; occasionally, stone has been used. Despite a range of plastics and other modern materials, ceramics and other traditional materials remain the most common, except for specialized uses such as plates for young children. Porcelain and bone china were once luxurious materials but today can be afforded by most of the world’s population. Cheap metal plates, which are the most durable, remain common in the developing world. Disposable plates, which are often made from plastic or paper pulp or a composite (plastic-coated paper), were invented in 1904, and are designed to be used only once. Also melamine resin or tempered glass such as Corelle can be used. Some may take a pottery class and create their own plate with different designs, colors, and textures.