I had two bags, one for labour and one for afterwards, worked quite well.
My tips are:
Put a nappy, vest, Vaseline, baby gro and hat in a carrier bag and show DH where it is so he can grab it once baby is born, no way my DH would be able to locate all the items if they were spread out! I had one in newborn size and one in 0-3 in case baby was massive!
Vaseline is good to stop the meconium sticking to baby so apply asap
Large dark coloured towel for showers, the ones they provide aren't great
iPad/iPhone and headphones, I listened to podcasts when I couldn't sleep at night
Water bottle with sports cap so you can drink lying down if needs be
Snacks and drinks for DH, don't want them having to go to canteen or fainting from hunger
Also, suggest DH packs spare pants/t-shirt and tooth brush in case you're in a while. Also a good plan to have shorts and t-shirt for DH as the wards are usually boiling
Several big comfy nighties that you can feed in, I bought some nice ones from mothercare and am still wearing them as ds is still feeding!
Yes yes to the big pants! I ended up with a section and my mum bought me some special c-section pants. They were pricy but super comfy! Again, still wearing them!
Good luck! X