I am in the same situation I think. I have packed mine, have put no baby shampoo in as I am pretty sure they had it last time, but in saying that I am sure they didn't use anything other than water anyway.
I ahve packed a dressing gown as DD was a summer baby so was warm, but this is due end of october so not sure how warm it will be.
Also packed towels, pj's, leggings and top for coming home.
Maternity pads, knickers, nursing bras, breast pads, socks, toilets essentials, puzzle book too.
For baby have packed 3 sleepsuits, 3 vests, coming home coat, blanket, muslin squares, nappies, cotton wool, teddy to put at the bottom of his cot.
Oh and a laundry bag for dirties.
I am sure I have more than that, but can't get my brain to work very well. If there is anything you think I will not need tell me, as I will remove it.