A cocktail coaster, or drink coaster, is a small, flat piece of material used to rest a drink on. Coasters are often made of wood, cork, or paper, and are often decorated with a design or logo.

Cocktail coasters have been used for centuries. The first coasters were made of cork, and were used to protect furniture from condensation and spills. Paper coasters appeared in the early 20th century, and were often used to promote businesses and products.

Wooden coasters …