Not ours, of course, but I have a new nephew, and Eliot has a new cousin. On that side of the family there are now three boys and three girls spanning a six year range. Everyday it looks more and more like Eliot is going to be a singleton, so having cousins with whom he can be close and share history becomes increasingly important.
I only have three cousins, two a few years younger than me and one decades younger whom I never met. All three of them are singletons. Growing up, I shared more in common with one cousin than brothers. We're not super close now, but still comfort in having each other. I can wish for the same or better for Eliot. Regular summer reunions should help ground those relationships.
