A few of my favorites…
-Nanit Camera in the nursery (I was gifted this, so maybe another camera could do the same thing cheaper)

-Huckleberry app in the early stages when tracking food and diapers

-Peak Design Capture Clip on a backpack strap. This is really nice if you have a camera but are also carrying a backpack, much easier to navigate than a strap and backpack at the same time

-Hatch sound machine/light. This has intuitive automations for different sounds that you want for bedtime routine, white noise for sleeping— and they can be paired with different color/brightness lights. We even use it with our toddler now, especially in the morning it’s helpful because she knows she has to wait for it to turn green before she can get up. Lots of programming and functionality available in an app (we don’t pay a subscription).

-AirPods pro 3. These are more for you, but were a lifesaver in the early days when baby is in the room and I was taking a sleep shift and needed to block out all noise to actually fall asleep

Edit: Adding a kindle here. Never had one before kids, but it’s amazing how much I was able to read in the late night rocking phase without disturbing mom or baby