Adult diapers/tena for postpartum bleeding. Lotion, extra pair of clothing for baby and yourself, phone charger/ AirPods/book.
EYE MASK if so you can get some sleep and ear plugs or noise cancelling headphones. I wish I had both of those especially because I had to stay 3 days because of an emergency c section. It’s always noisy and lights are constantly being turned on during the night to check mom and baby.
Somehow I forgot flip flops/slip on sandals. Huge mistake. Don't forget that!!