When is a mug, not just something you use for your favorite drink(s)? When it’s designed to look like a Nintendo Game Boy, complete with a “Game Over” message at the bottom. Or, a heat-activated Tetris mug that simulates a level of the game. Continue reading to see more.

Ancient mugs were usually carved in wood or bone or shaped of clay, but most modern ones are made of ceramic materials such as earthenware, bone china, porcelain or stoneware.

Some are made from strengthened glass, such as Pyrex. Other materials, including plastic, steel and enameled metal are preferred where break resistance and reduced weight are at a premium, such as for campers. Techniques such as silk screen printing or decals are used to apply decorations; these are fired onto the mug to ensure permanence.