I'm trying to think of a gift idea to send to my sister-in-law and brother after the birth of their first baby. I already gifted all of my favorite baby things (e.g. A&A swaddles, books, teether, nb onesies) as my baby shower gift.

Is there anything that you received after your baby was born that you really loved and appreciated getting? I'm not sure if I should send something for the baby or something more for them.
I live across the country, so I would be mailing this gift.
Thanks for the suggestions!