Object
1. Not seen in Stars Hollow
2. Seen near Yale (not on campus, but in the area)
3. More functional than decorative, but the actual usefulness might be in question ;)
4. It is not Rory's, but there is a minor plot point around it that involves her
5. I don't think Lorelai sees it or talks about it, I'd have to read thru the rest of the transcript to verify but she's not in the scene I'm thinking of
6. It belongs to Paris
7. Seen in Paris' apartment
8. We see Paris standing with, and talking extensively about, the object
9. It cannot fit inside Bert the Toolbox (mostly because Paris goes way overboard with anything she does, heh)
TL: Not seen during the Plaid Years
Guesses: Not Paris' letter opener
Not the printing press