There once was a time when companies produced animal napkin rings using a plastic called Bakelite. Those vintage napkin rings can go for a decent price these days in antique stores. But there's no reason you can't design and 3D print your own versions! :-)
More info and pics: http://wp.me/p2hTaI-ho
zookins-bird.stl | 206.0KB | |
zookins-elephant.stl | 284.0KB | |
zookins-hedgehog.stl | 209.7KB | |
zookins-turtle.stl | 285.7KB |