In my parent's home, we used rings to identify the family's napkins. (Paper napkins were an extravagance, only used for really messy or 'casual' dinners like burgers.) I had a bird, my brother a manly wood ring he made at camp, my sister a rabbit, my mother a green bakelite circle, and Dad's was silver with the four suits of playing cards on it.
When my mother died, fifteen years after Dad, I found both their rings in her apartment, nestled together with her linens.
When my sons were small, we also used napkin rings: animal clips for each boy, antique silver rings for us. Sometime in their teens, we stopped using them- maybe they found them juvenile. When I saw these pewter rings from Beehive Kitchen, I was reminded of their charm and utility. ($62 for a set of four.)
But it's lovely to use antique silver rings, many of which are monogrammed or engraved with a name. This art noveau beauty, from eBay seller artpottery is starting at $65.
The romantic Victorian piece at left, engraved "Mira", is from a Philadelphia estate; starting bid $39 from eBay seller turquoise.
My current favourite from eBay is this French deco hallmarked sterling piece, starting bid $150 from seller jakob-source.
An easy way to enjoy old silver: minimal polishing, lovely patina and a mysterious bit of history on the table.