This being a rather insane season to travel, it seems appropriate to bring up the most sanity-restoring of all airport signs.
Not that this is a race with much competition: The easy winner is MKE’s post-security “Recombobulation Area” sign. (The sign delineates an area where travelers can undo any TSA-enforced wardrobe malfunctions and generally reclaim their dignity.)
In pretty much any customer service situation, a little humor and acknowledgment that we’re all in the same boat (or plane) goes a long way. Even in airport security.