So we left the house for a while today (went to the cafe and did work then) and when we came back, we saw this little guy in our hallway.  It's unclear to me whether he's out in the hall to spread holiday cheer or by accident.  This is the very same door that I knocked on to let the resident know that she had left her massive set of keys in the door.  Later that week, I realized that she does that at least a few days a week.