Our Matty doesn't seem to provide much, I've been packed for a couple of weeks (am 39) and have packed the following:
For me: couple of nighties, slippers, light-weight dressing gown, underwear (old pants rather than disposables), nursing bras, breast pads, sanitary towels, tracksuit bottoms, couple of t-shirts, vest top from my mat tankini (hoping to use birthing pool), wash bag filled with minitures of everything I'll need, book, notepad and pen.
For baby: nappies, cotton wool, 3 sleep suits, 3 vests, going home outfit plus socks, couple of cardies, pram blanket, nappy sacks.
Hubby taking care of : camara, lists of phone numbers etc, towels (if it turns out I need them), shorts and t-shirt for himself (hoping for water birth - can be warm for dads in the room apparently)
Figure anything we've missed can easily be got at a later point. Have packed mine and baby's stuff into separate bags so if anyone other than myself or dh has to look for stuff they've got a fighting chance. Hve packed baby's things in changing bag and my stuff into one of those overnight suitcase things you can get away with as hand luggage on flights. HTH