Heva - my list is huge too!
I tend to overpack - JUST IN CASE - but I feel better knowing I am prepared for anything...
I also pack assuming I will be in hospital for at least 3 days.
This is my OMG massive list...
Part of this list is what the hospital has asked us to bring and part of it is personal preference from my first birthing experience...
My one piece of advice is make sure you have PLENTY of undies, pants/pj's and pads - I have never bled so much in my life!!!

LABOUR AND BIRTH
Hospital Paperwork
Medicare card/Pension Card
Baby Folder
Tshirt/Nightie for Birthing
PJ's for after
Socks
Slippers
Lollies
Snacks
Drinks
Books/magazines
iPod or stereo
Massage Oil
Face cloth
Hair Bands
Lip Balm
Camera and Batteries
Clothes for partner
Mobile and spare change
List of phone numbers
Money
Plastic bag for dirty clothes

POST BIRTH
Day-time Clothes
Knickers
Bras
Breastpads
Maternity Pads x3 packs
Slip-on shoes/slippers
PJ's
Dressing Gown
Toiletries
Money
Pen and Paper/notebook
Watch
Gifts for siblings
Going home Outfit
Plastic bags for dirty clothes
Mobile phone and Charger

BABY
Nappies
4 Singlets
4 Jumpsuits
4 Socks/Booties
4 Scratch Mittens
4 Hat
2 Home Outfits
Wipes
Baby Wash
Baby Moisturiser
Face Washers
Baby Towel
Wraps/Blankets

But after reading some of the replies, I think I need to add some!