I would pack more maternity pads!!
Also don't forget maternity bras, even if you don't breastfeed, you may need support. I had to sleep with them on as I was so uncomfortable.
Vasaline, I read someplace (might have been here???) that it's good to put on bubs bum when they do the black poos (easier to clean off) apparentaly.
Day clothes.
Shoes of some description, they don't like you to walk around barefooted.
Essential oils, if your into that kind of thing.

I think everyone has got everything else covered.

Jo