Casting a laptop's screen with a TV is pretty straightforward This article explains how to mirror a laptop to a TV both wirelessly and using wires and includes instructions to stop mirroring, too ...

The built-in webcam turns on automatically when you open certain programs such as Skype or Facebook video, but you may want to access the webcam directly without going through a third-party source.

The solution is to put a mirror in front of the laptop cam, and flip the image left-to-right in software. They use Zoom, which has a mirror mode. Done. The trick is making a nice frame.

Turning on the camera on a Mac is vital for your video call. Here's how to do it on any Mac computer.