I'm currently reading ADwD, so to avoid spoilers I haven't read this thread beyond the first page. (I'll probably go through everything once I finish the book, though.)
Anyway, I came up with these while passing the time between GoT seasons, and figured I'd post them here because fans of the books might also appreciate them. I'm also working on a Targaryen crest for something along the same lines as these, as well as a "Valar Morghulis" design.
If you like em, click em.