Unusual Coffee Mug

Whereas ancient mugs were usually carved in wood or bone or shaped of clay, 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.
The oldest drinking vessels recovered by archaeologists were made of bones, they hardly had a handle and thus are not mugs. The first mugs are related to the Neolithic Stone Age and pottery vessels which were found in China and Japan and date to about 10000 BCE. The first pottery was shaped by hands and was later facilitated by invention of the potter's wheel (date unknown, between 6,500 and 3000 BCE). It was relatively easy to add a handle to a cup in the process thus producing a mug. For example, a rather advanced, decorated clay mug from 4000–5000 BCE was found in Greece. The biggest disadvantage of those clay mugs was thick walls unfit for the mouth. The walls were thinned with development of metalworking techniques. Metal mugs were produced from bronze, silver, gold and even lead, starting from roughly 2000 BCE and were hard to use with hot drinks. Wooden mugs were produced probably from the oldest time, but most of them could not be preserved to the present time. The invention of porcelain around 600 CE in China brought a new era of thin-walled mugs suitable both for cold and hot liquids, which we enjoy today.