For the purposes of pranking people on zoom calls, I setup a OBS / Syphon / Camtwist flow that works great for my alternative conference requirements (ranging from matrix style graphics, playing videos of me on the green screen doing things in the background, scrolling comments on the meeting on my video feed etc...).

However... it is a major MAJOR PITA to get going when I want to jump on a quick call and more than often I'm in and out of the meeting a few times because of annoying defaults or software I forgot to start. But that 1 in 10 prank feeling? Well worth the 9 false starts.

I'd love OBS to work on its own to remove a few more steps from my setup!