The first 6 months of your first baby only come once. Here's a summary for anyone interested.
Gear. We love mam bottles, mam pacifiers (yes I have a breastfed baby that uses pacifiers without the world coming to an end, even when she was just a few weeks old), the boogin head pacifier clip (others have huge adult finger pinching clips), the mamaroo (a lifesaver when she was a newborn), sophie the giraffe, cheap IKEA baby mat & mobile. We love them all.
I found that having baby in long sleeve onsies and footed pants is the absolutely easiest clothing choice I could make. I had a September baby so she was tiny during the cold months. Now that she's a little older baby and it's spring I can finally feel comfortable not putting her in many layers. I highly recommend any sleeper sack with velcro, and pj's with zippers (not snaps!), and bibs with snaps not velcro. Velcro sticks to everything in the wash and is a huge hassle. Not all babies are huge droolers but mine was big time from about 2-5 months. We go through a lot of bibs. Now that she eats food we use the bigger bibs with plastic backing.
For cloth diapers we went with BumGenius Freetime. I absolutely love them. Highly. Highly recommend them. We didn't spring for the organic versions (elementals). They were $5 more each and heard they have drying time issues. I got a kitchen trash can with flip lid and bought 2 of the planet wise liners and they work amazing. Don't bother with the wet bags, go straight for the can liners.
When not cloth diapering (travel, daycare etc) I usually buy whatever's on sale, but as a tiny newborn I loved pampers swaddlers. Yes I tried many of the organic/natural versions but ultimately came back to the swaddlers since they worked the best. Also their wet strip worked the best. Other brands have wet indicator strips but they seemed to only work so-so.
We got Ashby a play mat from IKEA as her Christmas gift when she was 3 months. She loved it even though it as the most random toys you could combine. It has a sun, and a cloud (okay... weather themed), then a goose (what?!), and finally on top attached by velcro is a cat. Totally. Random. But she loved it. Her favorite was the cloud. It was so much cheaper than the fancy models of this at Target so everyone in the household was happy. We also grabbed the $5 IKEA mobile for over her changing table. It was awesome to hang it there! Bug theme sorta went with our nursery theme so again... happy mom.
Those swaddle blankets. I may be the only mom on the internet but seriously one aden & anais blanket is plenty. We really didn't use ours very much. We ended up with 5 and that was excessive. I have some that are still barely touched. We used the velcro swaddle blankets for night time and used warmer blankets over her body while in the car seat (again September baby). They are nice so I wouldn't say pass on them, but a 4 pack may be too much. I'm not sure they come in one packs however.
Hope that's all!