The webcam is... not easy. Or anyway, it worked when I used a raspberry pI with a raspberry pi camera. Now I use some orange pi zeros with USB cameras, and the setup was tricky. Even worse, it seems to change the camera device every few reboots, so it's basically useless. My printer is by my desk though, so it's not a priority for me. If I really wanted a camera i'd probably set up a cheap WiFi camera that exposed a stream and just set octoprint to point to that stream instead of serving a local one itself. I also use a relay to power my printer on and off, and I think if I was going to set it up again i'd just use a smart plug and one of the plugins to turn it on and off.