With the ideas flowing through my mind after my last post, I've had a euphoria in creating dungeons, riddles, NPCs, and other tidbits to get the campaign stabilized. I have one NPC that I've designed, a halfling rogue, that suffers from an irrational phobia, and he desires to collect the orbs (with the other "villains" or the rival group) so that he may wish this thing that causes his phobia out of the world (the legend claims the orbs, when brought together, grants one world-changing wish to their possessors, although that's not what really happens--and changing the world with these wishes is the goal of the rival group.)
So, I pose the question, what kind of irrational phobia could this halfling have? Any ideas? I've come up with ideas like him being afraid of the color red, or afraid of it raining, and would wish for red to disappear for the world or for it to never rain again. Think kind of like Malkavian if you've played Vampire before.