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Non-metal caps or covers for beverage containers, bottles, cans, mugs, glasses, barware, and cups, that can be converted into a coaster on which a beverage container can be placed, composed of one or more of the following non-metal materials; water resistant materials, partially water resistant materials, waterproof materials, partially waterproof materials, absorbent materials, and thermal insulating materials such as paper, plastic, foil, vinyl, fabric, cloth, and nylon