I love infant carseats, especially if you have a colicky baby because they can sleep in it and the acid doesn't come up as much. I have big babies so I had the regular graco snugride and then the safeseat (carries up to 32 pounds) which went in my stroller. I love that feature! I had both because the bigger carseat weighed about 8 pounds more and carrying that after a c-section was hard with a 10+ pound baby. If you only want one carseat to work for the baby, then I recommend the Diono/Sunshine Kids Radian XL, it goes from 5 pounds to 115 as a booster and the 5 point harness goes to 85 pounds.
Video Monitor: thought I wouldn't need it, but I love being able to look and see what the kiddos are doing in the middle of the night. Summer Bestview has pan/tilt/zoom.
Graco Sweetpeace Soother: can put on seat comes with or snugride seat. This is a swing/soother, etc. Both of my kids slept in this until they were too big for it at 25 pounds. (Acid reflux and colic)
Big receiving blankets: 30X40 the 30X30 ones are too small to swaddle in.
Gowns: the night gowns that open at the bottom, or the ones that convert with snaps to pants and/or a gown are the best because they can go in a carseat, but they are hard to find.
Bouncer: wait until the baby is born for this one because each child likes a different feel, incline, etc. I actually took my baby to the great consignment shop by my house and set him each one until he stopped fussying and left him in it while I shopped next to him. We already had his sister's at home from the year before, but he hated it!
Start buying diapers now, but don't open them. My sister bought me one pack a week for the whole time I was pregnant and it was wonderful! You don't know what size and brand will work the best.
I used a bassinet for my kids after the soother, but then put them in a crib after they outgrew it. I have not been able to get them to sleep in a pack and play because it just isn't comfy enough I guess.
Pacifiers and bottles and breast pumps: wait until you know what the baby wants/needs. Each one wants something different and is unique. The hospital will send you home with enough to get started, and if you get WIC then they will loan you a hospital pump to take home. Even if they don't give you that one, you do get a hand pump one to take home.
A nightgown that opens in the front so that you can feed without having to show everything.
Don't bring new stuff to the hospital, it gets all icky.
I have a Graco high chair that is wonderful, and then I have a second one that is even better, but I can't remember the name. The tray actually swings away from the baby, so you don't have to take off the tray and then find a place to set it down. If you want to know what will work for you, then go and try them out! Can you take the tray off with one hand? Is it easy or hard? Do you get frustrated? Do you HAVE to look and see what you are doing?
Newborns don't need a lot of toys, but infants do, and the kind that have a suction cup on the bottom so they stick to the tray are wonderful, they can't throw them on the floor as easily so you don't have to pick them up as much.
You need a bathtub: any one will work fine, but the fisher price one with the sling is so nice that I have to recommend it! Oh, and the summer infant bath seat that unfolds in the bathtub is terrible. The baby kept falling out of it and I had to take it back.
You need wipes and baby wash, but not a whole lot of other stuff like that. Good nail scissors and the little gloves to keep the baby from scratching himself.
That is all I can think of now, but you have gotten a lot of good ideas so far. Good luck on that list mama! I bought most of my big stuff on craigslist or at a consignment shop. I don't know if they have one where you are but here we have Other Mothers, and they do a 25 cent sale at the end of every month and so I have gotten a lot of really good stuff there for very cheap. They are in other cities too so maybe look them up online.