I had this same problem last time, so I didn't bother to pack one at all (not even the baby things) and had to scramble to pack it in the last minute so I packed it very poorly and suffered for it in hospital as it didn't have what I needed :(
So I assume it must be a silly question as nobody asks it.
I have started sorting and washing baby clothes and will buy nappies and breast pads, all the disposable items to pack as well, that part will be easy.
But what do you do about your own clothes and toiletries as you obviously will be needing them for the next few weeks so you can't pack them up. So do you just leave instructions for your dh about what to pack in the last minute in case you can't do it? Which leave only a half packed bag, is this what everyone does, have a half packed bag?
or is there some other way that I am missing?