Renberg was for many years the owner and public face of Renberg's, which operated in Tulsa for more than 85 years and was one of the city's largest independent department store chains. His grandfather, Sam Renberg, a German Jewish immigrant and clothier, founded the store on Main Street in 1913.

– Waterstone coaster – Freakishly absorbent from hot or cold drinks. – Protects furniture from moisture damage. – Printed designs are durable and fade resistant.

To clean your coasters, prepare a solution of 3 parts hot water (not boiling) and 1 part bleach. Soak the coasters overnight. Rinse, lay flat with the cork-side up and allow to air dry. This process may be repeated to remove stubborn stains such as coffee, wine and cola.