Go on pintrest and look up hospital bag for birth. They have some really good ones on there. And don't bring a breast pump. Most hospitals have one for you to use.
I only took a take home outfit for baby.. nothing else! Hospital provides everything else you need except for nail clippers but I always just bit them in the beginning bc I was nervous I would cut them.
Chargers, camera, makeup or any personal essentials for being picture ready.
A bunch of snacks and drinks for Daddy.
The 2 MOST important things for you.. Water bottle and chapstick! They were lifesavers for me.