'The Office': Michael's final episode 'tiny mystery'

At the end of last night’s special episode of The Office, Michael Scott bolted for Boulder, but his farewell episode apparently left behind a small puzzler. While teasing the episode in an interview with EW, Office exec producer Greg Daniels noted: “A tiny mystery story — which I’m not sure anyone’s going to catch and will come out a few episodes from now — is being set up here.” And so we ask: What is that “tiny mystery” — a mysterwee, if you will? (And I understand if you won’t.) Let us consider five possibilities:

1. Phyllis revealed that she had a secret baby when she was a teenager. Are we about to to meet her long lost spawn? And — as some are theorizing — could it be… Erin, who doesn’t know the identity of her biological mother?

2. Creed swiped Michael’s World’s Best Boss mug. What else did that notoriously shifty old-timer take? Has he secretly been pilfering important documents from Michael and the company to use as blackmail so he can take over as manager? Pay heed to Creed.

3. Pam went to see The King’s Speech while out of the office pricing shredders. Simple hooky? Perhaps. But why do you need to leave the office to price shredders? Maybe this one-time art student was boning up on her film knowledge before she makes her own Threat Level Midnight?

4. Distraught over being dumped by Erin, Gabe threatened Andy. Is he planning a Sabre-aided sabotage of Andy, who’s now in possession of Michael’s previous client list? (And does Gabe join forces with Stanley, who clearly covets that list?)

5. Toby engaged in a seemingly harmless video chat with brother Rory about Michael’s impending arrival in Colorado. But what if Rory is Toby with a dark side (notice: his dark hair), and he’s had it with his fellow Flenderson taking constant abuse from Michael, so he’s eager to deliver a welcome revenge basket of laxative-laced jam?

Hmmm and hmmmmm, PopWatchers. No. 1 seems rather plausible, I desperately want for No. 2 to be true (Creed = most underused Office weapon), Nos. 3 and 5 may be reaching too far and wide, and No. 4 could be disqualified because that story point appears to be bigger than “tiny.” What are some other possible lil’ mysteries?