A while ago I posted asking what you might use to share your LO's library with others...some people suggested a google doc and others goodreads.

I just found librarything and connects to "tiny cat" to share personal libraries. You can scan isbn numbers, have a wish list, and it has an app. It's also connected to hundreds of sites/libraries online to search for books. Just wanted to share this. I know my family will continue to grow LO's library for birthdays and holidays and this will help so we don't end up with duplicates.

https://www.librarything.com/