When I had my daughter we were allowed to dress her almost right away so a few changes of clothes for your new bundle of joy. If you plan on nursing then I suggest nursing bras and nursing PJ's unless you plan on hospital gown. Maybe some sweats for after birth you will want to be as comfortable as possible.
for baby.. depends if you want to dress while in the hospital or not.. if not then just an alfit to take home in for you and little one.. if your hospital supplies diapers formula and wipes then you wont need that.. might want to bring a few for the ride home tho depending where you live and if they do provide it, hat coat to go home in,, hand socks, binkey if your using them but some hospitals even provide that.. for you essentials deoderent shampoo conditioner hair and tooth brush hair elastics hair products, slippers, some old undies that u dont mine ruining if it happens, money for vending machines if youll want it.. dont know if im forgetting anything