Well, stuff like:
If you're from the Coast of Tassels, you may take one of the following starting Regional feats:
Know Upholstry: Gives you a +2 Intelligence check on all identification checks of furniture and cushions.
Way of the Pillow: You may throw a pillow with deadly accuracy. When flinging upholstered plush items you may increase the critical threat range to 17-20.
Of course, not silly stuff like this. I'm looking for examples of regional feats people have incorporated in their campaigns to reflect upbringing in different cultures/environments. You know, if you come from the Stonelands you may take the following feats... etc. Similiar I guess to the Forgotten Realms (which I don't have).