Really darn good idea. Since each creed is hard, to make it would be excellent for collaboration to create a nice resource here. Perhaps as full subs linked to this one, so they can be voted on appropriately. Go to Comment
Diseased people, (leprosy or any other such fear inducing disease) when traveling, will often times wear a cloak that entirely covers their body and ring a bell as they travel, used as a warning for any others to stay away. Could be used for a disguise or safe passage.