The Rise of the Runelords forum has a wonderful thread keeping track of all the extras and additions that people have created over the years. Here's one for Ruins of Azlant.
If you have something to contribute, please add it. If it involves external files, such as a map or handout, please choose a host that's stable in the long term. It's terribly frustrating for future users when a link goes dead.
Maps:
Cut-away view of the Alabaster Trident by Chinchbug (also posted on the the cartographer's guild)
