Everything that was mentioned plus the baby water if your bottle feeding. Im not really sure tho im not going to pack my baby a bag just an outfit for her pictures and for her to come home in
That and a spare shirt for yourself is handy for in case baby spits up on you
Diapers, wipes, bottle, formula if you dont breast feed, an extra outfit, diaper rash cream, maybe small blanket, and a changing pad. I think that should do it