Someone posted an awesome hospital list on the facebook page, but I don't remember who! Lemme see if I can find it.
Edit: Here it is! Thanks ptr! Figured I'd save you some typing.
"Only pack like 3-4 diapers for the new baby (for when you're on the road home and stopping by somewhere like for lunch or whatever) because they will have diapers and you can take the extras that are left when you're ready to go.
The hospital will use a lot of baby clothes for most of the hospital stay so save your outfits for when you REALLY are ready to head home (change like half an hour before discharge).
Don't pack pads, they have pads that you can ask for extras to take home with.
Ask for extra witch hazel and extra Dermol (sp?) to take home if you have a vaginal delivery and ask for an extra squirter tube to rinse yourself with after bathroom (one to keep at home and one to keep in your diaper bag).
I found the mesh disposable underwear that the hospital give you are much more comfortable than regular panties and hold pads much more securely but bring old panties that you won't mind getting blood on if you dont find the mesh disposable ones to be comfortable.
Bring tank tops, yoga pants, hoodies, etc, you won't want to wear jeans (pre pregnancy jeans or maternity). I found wearing sports bra with the spaghetti type of straps are much easier and comfortable to wear while breastfeeding as they can be pulled up and down, the nursing bras i had were too bulky and when pulled down would interfere with my daughter's latching.
Motherhood maternity's post partum belt is a MUST!!!! it gave me much better mobility and support after delivery.
Bring quarters for the vending machine for your dh. Bring chapstick. phone chargers. Camera, batteries, memory card. Baby book and ask the nurses to do footprints and handprints directly in the baby book. breast pads. Have dr that delivered the baby sign his name in the baby book.
Shampoo, conditioner, makeup, other toiletries (trick is to bring neutral type of shampoo/conditioner that both you and dh can use), pajamas pants and shirts for your dh.
Slippers or sandals because the floor in your room will get dirty fast because people will be coming in and out all day long with shoes."