Here have been my favorite things:
Miracle Blanket (I was really sad when I had to stop using this- my baby slept really great in this)
bottles (depends on how often you like to wash. I have to wash my pump parts everyday so I just do the bottles along with it. So I only have 6 bottles)
mobile (i have the precious planet one- I use the music everynight)
some halo sleep sack- wearable blanket (if you’re going to swaddle- you don’t need a super small sleep sack for a newborn. I’d get the size Small meant for for 10-18lbs. And think about the season, my baby was born in April and I’m still using a cotton one- you don’t want them overheated)
A&A blankets: I don’t use them to swaddle, but they’re great stroller blankets or I use them in the car to keep the sun off of her
stroller: I have a jogging stroller I love, you should probably think about your lifestyle for this. some people don’t need one and others might just use an umbrella stroller. I use both a carrier and stroller depending on where I’m going or what I’m doing. There are +/- to both.
other basics are nice: baby washcloths, towels, receiving blankets, burpcloths (you should really get the gerber cloth diapers for these, they’re cheap and work better than fancy looking burp cloths), books. don’t go overboard on the toys IMO (except big things like gym and exercauser).
skips (for me):
boppy pillow (I think i might be too tall for them?)
bottle warmer (my baby only gets 3 bottles a day, and we use hot water in a large cup to warm it up)
bottle rack (I just use one of those drying mats)
anything that makes baby food. your baby won’t be eating purees that long, and you can use any food processor if you want to make your own. huge waste of $$ IMO. If you don’t have a food processor, you’re better off buying yourself a food processor than anything created only for baby food. You will get more use out of a food processor in the long run.
clothing: don’t register for NB or 3 mo clothes- people will buy you those sizes anyway and they will buy what they like, not what you register for. My baby was 7lbs4oz and wore NB size for 1 month and the 2nd month she wore 3 mo size. At 3 mos I had to put her in 6 mo clothing, that’s when she started wearing clothes a little longer. So you might not get much time out of NB or 3 mo clothing. I do think it’s a good idea to have a few NB pieces on hand in case you need them (you can buy more) but I wouldn’t go overboard because some babies never fit in them.
Also think about the season. I had an early April baby and she wore some sleep and plays the first month but by May it was too hot to have her in them so she never wore any of her 3 or 6 mo sleep and plays at all! She wore lots of little sunsuits and onesie type things. Only now in her 9 mo clothing (she is 6 mo) and it’s October she’s finally wearing sleep and plays.
I used a swing, but for $140, I only got 3 months use out of it so not sure it’s really worth the $$. but if you get it as a gift I think it’s fine. otherwise, buy a used one. there are LOTS of used swings floating around and they’ve barely been used.