First time parent!

So myself and my partner are expecting our first child this year, October 31st, we're having a baby boy. Right now we're just getting everything prepared for our boy including decorating our new flat for him coming along! My partner is such a big size right now, with just less than 9 weeks to go! We have already picked our sons name but are keeping it secret, don't anyone stealing our name😂 just out of curiosity, is there any specific item that you found you couldn't have lived without in the early stages of your child's life, that helped the baby or the mother after birth when the baby's here?

I'd like to know what everyone else found useful as being a first time parent all methods are helpful to know, and want to be as hands on as possible so my partner can rest well👶🏼❤️