Coasters are small, flat objects designed to protect surfaces from moisture and heat damage caused by drinks. Typically made from materials like cork, wood, ceramic, or silicone, they provide a barrier between a beverage and a table or countertop. Coasters can also enhance the aesthetic of a space, often featuring decorative designs or patterns. In addition to their protective function, coasters can be used for branding and marketing purposes. Many businesses, such as restaurants and bars, use custom coasters with their logos to promote their brand. Coasters are also popular as gifts and collectibles, with various themes and styles available.