Oh, if you are having a section:
ARNICA, ARNICA, ARNICA - Get the strongest stuff you can find and eat lotsof it starting about 24 hours before section is scheduled.
music for the delivery. Most hospitals will let you play music in theatre. It's nice to choose it.
Food. Post section it is quite common that they won't let you eat anything solid until you go for a poo. So i have learned to smuggle food in. But, beware, a common side effect of the anaesthetic is that it make you sick. After DS was born I was soooooooo hungry. They gave me toast with jam. I scarfed it down... then threw it up. I was so mad because I was starving again.
Oh, maternity wards ar HOT. So bring light weight PJs. US EBAY has some that have breast feeding slits in the pleat down the front. They are fab. I stupidly gave one away thinking I was having no more children. Wish I could get it back now.
Oh, if you have a toddler, it's nice to get a pressie from baby to toddler so they feel part of it rather than jealous of new baby.
Oh, constipation is common post surgery (don't know why) so might want to bring something for that.
That's all I can think of just now...