I was stressing about the lack of registry activity and I feel so silly for doing so. I did receive a lot of off-registry items but they were all lovely, personal gifts that I would never have thought to register for.
I did receive duplicate sets of pyrex so I used the refund from one set plus some gift cards (sent by someone who couldn't make it) to get a 4-place setting of our china that was on sale.
I'm almost finished with my Thank You notes, I have three more to write this evening and then I just need to address the envelopes and put them in the mail.