There are affiliate links, but these are items I looked up and have actually used in the past. They proved to be assets for having a new baby instead of just wastes of money.
The first item is a Boppy Pillow, they are perfect when you’re nursing and help prop baby up as they learn to control their neck (just NEVER leave them unsupervised at a very young age)
I used the same single pillow through both my girls and it was totally worth the cost.
The next item is a Bert’s Bees pack. They are a great, gentle and natural brand, a bit pricier than other brands like Aveeno but they are worth the extra money.