Okay, I know this one is cheating, completely unfair. I know that. But I get a kick out of it and I encourage you to guess anyway.
The question is not so much "Whatzit?" but "What's inside that thing?"
Here's the thing in question:
It's a custom made box, approximately 12" by 15", has a lid, and is about 3" deep. The box is made from archival acid-free, lignin-free cardboard.
But what's inside it? I don't think I'll tell you anything about it. Just this: There are two objects inside this very prettily made box.
All shall be revealed on Monday, but I look forward to your wild guesses. :D