Placemat

A placemat or table mat is a covering and/or pad designating an individual place setting, unlike the larger table cloth that covers the entire surface. Placemats are made from many different materials depending on their purpose: to protect, decorate, entertain, and/or advertise. Materials and production methods range from mass-produced and commercial, to local and traditional.

https://en.wikipedia.org/wiki/Placemat