I was wondering if there is a sourcebook (perhaps from an earlier edition) that details monstrous deities? Mostly I'm looking for the fluffy stuff like holy symbols, important holy days, rituals, places of worship, etc. I know I could just make it up, but if someone has already gone to the trouble, I'd prefer to just add another book or two to my collection. Humanoid deities (orcs, goblins, kobolds, etc) are most useful, followed by giant, fey, beholder, mind flayer, dragon, other. I know at least a few dragon deities were in Draconomicon, but I haven't picked that up yet. Any recommendations will be appreciated. Thanks.
) I don't think conversion should be any real problem... they won't be encountering any deities or avatars, only worshippers. I'll probably allow the most powerful demon lords and devil princes a few demigod-like powers in order to grant spells to a handful of fanatical worshippers, then just use SRD and Realms domains appropriate for the various deities' interests. Toss in a few things from the Book of Vile Darkness to increase the Evil factor a bit, and I should be good to go.