If you are going to the JHH, they should have given you a good list of what to take in your booklet thing they give you at the first AN appointment.

Lots of maternity pads is a must I found, (TMI) - also old or black underwear as sometimes you can 'leak' in the first few days of loss. Disposable breast pads, and like others said, the trial packs of shampoo, conditioner and showergel. Also that way you can have your toilet bag already packed and not have to worry about grabbing your things out of the shower and it taking up heaps of room.

I also am packing tops good for breastfeeding that are loose, and cotton pants with drawstring. And a few maternity bras as sometimes you can leak with them too. Phone cards are also great as mobiles aren't allowed as a rule I think?