I bought a decent Microphone (jlab talk pro) and a $200 Webcam (Logitech brio 4k). Since all of my interactions are over Webcam I wanted to have something better than the default laptop Webcam. Also I do my work on a desktop
I would also recommend building a PC. I run several docker containers at once and the company issued MacBook pro is very sluggish with this. I built my own PC with lots of ram and (what was at the time) a good cpu.
Also, learn about different kinds of house lights (ambient, task, accent) and get some RGB LED light bulbs so you can control the light level of your home effectively. I have some Ikea lights which light up the whole apartment during the day, but if I'm up late working, I only have a warm LED light on a spring arm lamp over my desk that I use. Some people light to get lights that attach to their monitors and point at your desktop