Is it your first?
For my first I went over board and packed everything you could think of. For my second I was more aware and packed a smaller bag. Just had hats, mittens, socks, and onesies for my DD. I packed loose pants and shirt and no undies since hospital provides the mesh ones that are more comfortable for me. My hospital provides everything from pads to , underwear & socks, toothbrush & hairbrush.
Chargers
Ear buds
Chapstick
Hair tie/clips
Slippers/sandals
Robe/kimono
Hairbrush
Toothbrush
1 outfit for you and baby
1 swaddle
Lotion
Baby book in case you're up, not sleeping, bored etc.
My hospital had everything I needed so I literally didn't use anything I took