Gripe Water- Works awesome for hiccups and gas pains.
1) We needed something that could we move up and down our extremely narrow staircase quickly and easily (esp. since I had a c-section).
2) We needed something that didn't take up a ton of room and was easy to pack in our mid-sized car.
This pack n play fit the bill, and I've loved it. I just keep any baby supplies in a cute 3 Sprouts storage caddy I was given by a friend at my baby shower. It folds up so easily, and we (well, the husband) literally brought it downstairs every morning and upstairs every night during the first 4 weeks. Plus it's nice and sturdy, and it looks good.
Summer Infant Rest Assured Sleeper- I registered for this because we originally planned on co-sleeping, and I wanted to do it safely. Turns out our baby girl really, really likes her own quiet space. This thing is awesome though, and we're still using it all of the time. We put this in the pack and play and in her crib, so that the space seems a little bit more confined. I also will bring it over my parents house so that I don't have to bring the pack n play (though they will eventually get one for their house). It folds up really nicely, and it has a night light/sound machine/ vibration attachment. The night light feature alone made it worth the money because one of us could do diaper changes in the middle of the night, without having to wake the other up (Fiona slept in her pack n play in our room up until week 4).
* I was only able to breastfeed for five days before I was hospitalized with what my doctors believe to be a case of breastfeeding anaphylaxis. It was even more terrifying than it sounds. As soon as the shock and fear subside a bit I hope to write a post on this...especially since I strongly believe that it, along with postpartum hives, are not as rare as they are made out to be. Needless to say, Fiona is now a formula-fed, bottle champ. Most of these items reflect these needs.
Avent Soothie Pacifier- Fiona has a crazy suck (as evident by her feeding habits), and loves some good pacifier time. I believe the majority of hospitals provide this pacifier, so just have some as a back up incase your little one takes a liking to it.
Tiny Love Take-Along Arch- Once Fiona could focus a bit more, she obviously liked having fun things to look at. Because it is adjustable, I've been able to use it on our bouncer, carseat and sleeper. Plus it costs less than $20.00, which I think makes it extra-amazing.
DSLR Camera- We saved up before our little one arrived because we knew that having a kid = taking a gazillion pictures of said kid. Worthy investment.
Amazon Prime- During the first few weeks of your baby's life, the free 2-day shipping will be a life-saver. Again, especially useful if you have a c-section. Once you have a baby, the savings definitely outweigh the membership costs.
Hope this helps!