For a wifi option, you can use Droidcam with OBS. Setup the virtual camera inside OBS and you've got a wifi webcam that you can walk around with.

I've used that setup many times and it's sweet. At work my coworkers are all astonished and amazed when I use the OBS virtual camera pass-through to my virtual desktop to walk around while talking (I use a wireless headset for the audio). I can even show various overlays of my desktop with my face and a downcam I have setup for demonstrations (like a craft cam setup).

Combine it with RVC voice changing silliness and they're all blown away. The security folks (of which I'm a part, haha) always freak out a little bit when they see me share my Linux desktop when I'm on Teams via the company's virtual desktop. "That shouldn't be possible!" Haha

I don't have the heart to show them how you can copy and paste huge amounts of text into the virtual desktop directly (clipboard sharing is disabled and prohibited 🤣).