In practice, well, the closest I can think of to productive use of my time is to create some vampire coven rings.
Basically, you know the Darkblood coven ring. (Well, you might. I mighta shown a drawing of it once? Certainly meant to.) It's the black bat, with the dark purple eyes engraved into it.
I figured out a few others: the Dragul coven, contrary to what their name may conjure up, holds a rather intricate gray wolf with ruby eyes, symbolizing their close ties with werewolves.
The Zu clan has a green eastern dragon on it, with sapphire eyes engraved into it.
One of the main rival clans to the Dragul coven and antagonistic to Ruby, the Jagen clan (their chosen spelling), is symbolized by a dark crimson crescent moon.
I haven't really figured out what other covens would be, though. There would probably be something like either 16 or 28 different rings, depending on how many members of the council there would be. (This is a vampire council for the entire world, yet...at the same time, this is a council I see comfortably sitting at one gigantic square table. The latter number fits the former in terms of scale, the former number fits the latter in terms of scale...not to mention, artistic simplicity.)
Remember that only a current coven has a ring, since rings are a privilege of vampire lords and the vampire lord's immediate two underlings. Never more, sometimes less. (A coven can have as little as one ring.)