You:
Nursing top/bra, comfy pjs, slippers and a going home outfit ( something that is stretchy bottoms cause you don't know what will fit post baby)
Hygiene items and slippers/socks.
Baby:
Onesies, pjs and favorite blanket. Pack newborn and 3month because some babies never fit newborn.
Spouse/person with you:
Extra clothing especially socks hygiene items. Snacks for them and something to do while you rest/ want them to leave you in peace.
You- Extra pillow,loose fitting clothes or gown,gripper socks or slippers, personal hygiene products, cell phone charger,maternity bra and nursing pads. Baby- Baby outfits/sleepers,hats,hand mittens,passy if using one. The hospital will provide diapers and wipes and formula if you choose.