If you actually want to have some interesting filters, I've found Snap Camera[0] is the easiest. It just presents itself as a virtual webcam and sends over the processed video so you can use it with pretty much any application.

[0] https://snapcamera.snapchat.com/

Same. Couldn't find anything similar on snapchat either (snap camera can be selected as a camera in most software). The video has been all the rage in work discussions today, would have liked to be a cat in some meeting tomorrow.