Dropped off package, got home, keys not in pocket. Hm. I'm locked out.
It quickly became obvious where my keys probably were, since I used them to get back into the office. But on Christmas Eve, it could be a week and a half before I could get back in there!
I happened to have Laura's keys in my pocket, and she has one of my spares, so I went into her place to see if I could find it. No luck at her place or Denise's. I left a message on Denise's cell voicemail to ask her to call back and let me know where the spare was.
Thank goodness for wireless... I opened up my laptop and used my home wireless network to look up the phone number of a co-worker who might still be there. (He's even less of a morning person than I am, and is usually one of the few people left in the building when I leave.) He was there, he went to check the reception desk, and sure enough, my keys were there. I drove back over, and he opened the door and gave me my keys.
Denise called back a little while later (she heard my first message but not the "thanks, got 'em!") message and said she had my key with her for a change. Figures. :-)