Baby Registry: Must Have's & Don't Need's

Hi all! FTM here and starting to get ideas for what is needed for our baby registry! For those who know from experience, are there items that are a hands-down-must-have that you can recommend? At the same time, are there items that you received that you didn't really use or need that I should avoid all together? I already have a "My Brest Friend" and a "Rock n' Play". I'm just looking for any and all suggestions even ones that start with: "I never had enough of ______ so register for multiple..." etc. Thank you in advance for your help!!! Our rainbow baby will be here the first week of August and I already find myself nesting!! 🌈🤗😁