My serviette ring.

Napkin rings or Christening rings as they were often called are an invention of the European bourgeoisie, first appearing in France about 1800 and soon spreading to all countries in the western world. Most 19th century napkin rings were made of silver or silver plate, but others were made in bone, wood, pearl embroidery, porcelain, glass, and other materials. In the 20th century, bakelite and other new materials were used.