Keeping it simple: small ring, rectangle dice bag, all one color.
 
Over five hundred anodized aluminum rings make up this chainmail dice bag in a color of your choosing. It can hold about twenty 16mm d6s or three of the standard RPG 7-sets. It measures approximately 3 by 4 inches when empty and lying flat. A cord lock and a drawstring made of parachute cord keep its contents secure. Dice are not included.