In my hospital bag here in Aussie its good to pack for 2 nights stay.
For me
2 soft nursing bras (1 a cup size bigger as a precaution for milk engorged boobs).
2 nursing pads (Milk doesn't come in for a couple of days, so you don't need many).
Button down tops (for easy access).
1 Black pj pants (Black gives you peace of mind, cause things get messy).
4 Black underwear (Target sell 3 for $2 so buy and bin, 1 size up to accommodate the huge maternity pads you'll be wearing).
1 Black maxi dress (for easy access).
Slip on shoes (Cause its hard to bend over and the floor is cold).
Socks
Take advantage of the hospital gown for sake of ease and mess.
A warm cardigan.
Pulsitilla (A herbal aid that calms cramps).
Cammomile tea (A herbal tea that calms cramps).
Raspberry leaf tea (A herbal tea that tones the uterus, start drinking at 37 weeks).
Lavender oil/burner (A soothing essential oil).
Arnica cream (For bruising and achey muscles).
Witch hazel/pads (To soothe stiches or tears, place a couple on top of your pad).
Maternity pads (Pour a table spoon of aloe vera gel and witch hazel onto the pad and freeze).
Small water bottle (Squirt water while you pee to dilute acidity).
Heat pack (For achey muscles).
Water, laxatives, fruit high in fibre (To soften your stool).
Dried apricots (Keep your sugar levels up).
Soup (Easy to digest).
Tooth brush and paste.
Gentle shower gel (Soap is too clumsy to use).
Moisturiser, shaver, deodorant etc.
Keep all of your id's, medical records and birth plan in a clear folder.
For baby
5 grow suits that vary in style. Long sleeve, short sleeve, full leg etc (If they measure "normal" in the womb then they're newborn/000 size).
2 singlets (To wear under the suits that have zips or buttons).
2 hats, mittens, socks, bibs
A cardigan
Receiving blanket
4 muslin swaddles (Can also be used as burping cloths).
Car seat
Nappies
1:Witch hazel, 2:Water. Mixed well in a small spray bottle (Light spray on baby's bum as wipes are too harsh at the moment).
Cotton pads (To wipe baby's bottom).
Face cloths (For bathing baby).
Things to think about
Your own pillows, bedding and towels.
What you might labour in... a sarong, black skirt, long black t-shirt etc
Keep your small change for the vending machines, parking.
I found this so helpful and will refer to this when its time to pack my own bag 
