I opened it to discover a card from a librarian, explaining that my help a couple of months ago had helped a student get an A on her seminar paper, and expressing thanks.
There were also gingerbread cookies (*love*) and a lovely Vanderbilt mug.
So yeah, I got the warm fuzzies. From my alma mater, even! And in unrelated news, I even got a couple of one-line "thank you" emails from students today.
It's good to be appreciated.