For the first few months, I used...
*Diapers (Pampers Swaddlers, hasn't had a rash yet at 18 months, highly recommended)
*Wipes (WaterWipes, hasn't had a rash yet at 18 months, highly recommended)
*Wipes Warmer (Prince Lionheart, it was -20F out when we brought her home, necessity varies on this)
*Diaper cream ( Coconut oil usually, Yes To Baby Carrots for a reddened bottom, no longer available)
*Changing Table (Used it all the time until after 6 months, then just did it on the floor or the bed. So worth it for right away when bending over is agony, and I still use it for storage, definitely worth it.)
*Waterproof changing pads (Munchkin, had 5 and used them on top of the changing pad cover and barely had enough, because of that I only needed 1 cover instead of 5, and it still is in amazing shape, practically brand new looking)
*Changing pad cover (Aiden + Anais, previously mentioned only cover, so cute and I love the texture of muslin. Getting poop on the fuzzy ones seems like a horrible nightmare)
*Swaddle blankets (6 Aiden + Anais, felt like just barely enough)
*Moby Wrap (when she was too little for the ErgoBaby)
*ErgoBaby (still heavily used at 18 months, probably the one thing I couldn't imagine living without)
*Vibrating bouncer (lifesaver in the first few weeks)
*2-in-1 Carseat and Stroller System (Evenflo 35, Invaluable for when she was little and fell asleep in the carseat and we could just snap the whole thing onto the stroller)
*Pack-n-Play (Costco? Definitely got used)
*High Chair (Costco? Got used twice, was a gift, otherwise a huge waste)
*Bibs (1 Aiden + Anais bib/burp rag, kind of a waste. It never fails to get on her shirt too, glad we only bought 1)
*Bassinet (Nice for naps when she was less than a month old, shoulda just put her on the bed, a waste but so cute, will break it out to use for a month so I feel like it got used more, and it's just so damn cute)
*Activity Mat with Jungle Gym top (Fisher Price Rainforest, used it all the time, never felt like 1 wasn't enough)
*On the ground Jumparoo (Fisher Price Rainforest, used it all the time and she just loved it, the doorway Johnny Jump-Ups terrify me)
*Breast Pump (Medela Pump in Style, free through insurance, works amazing)
*Milk storage bags (Lansinoh, never had a bag break so far at 18 months)
*Breast pads (Lansinoh, NOT the "super soft" ones, they don't absorb as well as the "honeycomb" ones.)
*Silicone Pads (Useless for the first few months when my supply was regulating and I had crazy oversupply, very useful for the few times I used them under a swimsuit and was still self conscious enough to care if I leaked. I haven't used them in a long time, but they never go bad, so if I ever needed them I have them)
*sleep/lounging nursing bras (Super easy to pop the latch and nurse at night, holds your pads in place so you don't wake up in a puddle. I STILL have to wear them at night 18 months later, no pads though, just the extra layer of cotton helps absorb any leakage that might happen)
Maybe you wouldn't want these on your registry, but...
*Nipple Butter (Earth Mama Angel Baby nipple butter was created by the gods. Not only is it heaven on abused nipples, when I have a runny nose and it gets all irritated and sore it works amazing on that as well, and I feel like I always have a runny nose in the winter.
*Gel nipple pad "soothies" (Lansinoh, amazing for the first month when you just need a half hour of your nipples not being on fire. Don't use too much or your nipples take longer to desensitize)
*Always Infinity pads (Super thin yet super absorbent. The hospital ones are like wearing a diaper)
*Tucks Pads (Sweet, sweet relief. Just plain witch hazel would work too, but putting 2 tucks pads on top of my pad prevented my stitches from snagging)
*Earth Angel new mama bottom spray (Has witch hazel, aloe, and other soothing things that you want down there)
Just trying to be thorough