For audio, I used the Røde Wireless II Go. Somewhat expensive but I'm convinced there are cheaper alternatives out there that will give you a greater bang for the buck.
Especially nice with the charging case.
3/4
As a webcam I used my iPhone 15 Pro Max with a Belkin iPhone Mount with MagSafe: https://t.co/kOMALw28Ss
Surprisingly good source and easy to set up, just connect it using USB-C and select it.
2/4
Discussion
As a second monitor I used an iPad. Super simple. Don't even need to connect it via USB-C! Just head into the display settings and click "add monitor" 🤯
4/4