These chalkboard napkin rings ($65) serve as a napkin ring and placecard holder at the same time. They've been meticulously created in workshops for the physically challenged, and come with a slate pencil and sponge eraser. I think they're quite nifty and you could have a lot of fun with them. However they are a bit steep in price, and I worry that the chalkboard surface would get that cloudy finish after several uses. What do you think? Do you want a set?
Chalkboard Napkin Ring: Love It or Hate It?