Best personalized baby gift

So my sister has purchased a gift for each child I’d conceived and now that she’s pregnant I want to do something for her to return the appreciation and the gift.

I don’t want to do the same thing she’s done which was a personalized onesie and a bib and then a blanket with my kids initials. I saw these cute name puzzles on Etsy and I planned to order her one once she finds out the gender and chooses the baby’s name. Would that be a cute idea?