This was my 'essentials' list:
Breast pump if your want to breast feed & want OH to give LO ebm.
I would say go for the bath support rather than baby bath, found baby bath useless!
Nappies - if you chose to use disposables, I personally found pampers newborn ones the best at coping with newborn baby poo! Then when they get to weaning supermarket own ones were just as good (and cheaper) than branded ones. But I'd say get a few diferent types so you can suss out which ones suit you & LO best.
Bouncy/Rocking chair - VITAL! My DD would only sleep in her chair for about the first 3 weeks!
Comforter/blankie - something that you can sleep with before LO is born so that it smells of you & you can put it in the basket so they can still smell you when you put them down!
Sleeping bag/grobag - also found this to be key to getting DD to sleep in her basket rather than chair & as she got older it became part of the bedtime routine & helped settle her.
Muslins - get tonnes!
Antibacterial hand gel - Milton stuff is good, and also surface wipes for changing surfaces...especially public ones!
Scratch mitts - I found pointless! DD could get them off! Sleepsuits with 'built in' mitts were better IMO.
If bf - nipple cream, I found Kamillosan better than Lansinoh...but you do have to wipe it off prior to feeding!
Soothers/Dummies - If using/intend to use, get a variety of shapes sizes...they are not a 'one size/type fits/suits all' thing!
Cot Mobile - DD hated hers but other babies I've known couldn't/wouldn't settle without it!
Monitors - they all do different things, think about when & what you will use it for & pick one that suits that & the size of your house (Alot have nightlights built in)! In early days it's quite useful if LO is asleep in the living room & you need to go do washing up or grab a bite to eat/quick shower!
Towels - hooded ones!
Formula - If you plan to use, get some cartons of different ones. Again they aren't a 'one type suits all' thing. Think about it, you might like coca-cola but your OH can't stand it & prefers Pepsi...they don't taste exactly the same or have the same stuff in them!!
Oh & avoid snowsuit type things for really little ones, they don't cooperate & are difficult to get on & off if you aren't used to 'handling' a small person! Plus they inevitably poo all down the legs of it the second you leave the house! Get a good pram coat & blankets until they are a bit bigger/you are more confident! :)
(All personal opinion & not Gospel :o)