I wouldn't worry about gadgety stuff nor the baby bath if you can use a trough. As saram said depends on your washing facilities- don't forget detergent and plug for sink etc if not provided. I would take:
Disp nappies- can't remember how many in newborn packet but would go on 10 a day
All in ones- mainly what i used at the start but only 1 or 2 per day max for me as bubs was never spewy and it was December in Perth so v hot but you should go on 2-3 per day
Socks- one pair per day
singlets- 2 per day
Wraps- one every 2nd day
Towels- one or 2 if have washing machine
Bed linen- 2 sets plus rugs or grobag
Pram or sling and few bunny rugs to go in pram
No need for bathing products other than a few facewashers
Wipes and nappy rash cream
Cotton tips to clean around umbilical cord stump
Really depends if you have spewy bub or not, your washing facilities and what the hosp provides. What hosp u birthing at?