Swing, zip up pajamas, some sort of sound machine, pacifier (if your baby takes one), baby podster for them to sleep in when your taking a nap (I have leachco, boppy makes a good one too), gripe water and gas drops, baby mittens, carseat mirror so you can see them, tummy time mat, lots of burp cloths for vomit or spit up, some sort of nightlight that dances on the ceiling helps alot
Rock and play, crib, swing, a fan helps all my kids sleep good maybe because of the noise ? Stroller if you go out a lot to do things, pack and play. That’s about it.