Just remembered I have this super old IP camera that I was not using for anything. Managed to set it up real quick to monitor the wood stove. The interface uses Java which is a pita to get to work in Linux but I found that if I go directly to the stream URL I can actually view the stream directly in a web browser without using the java part of the web interface. It even works on my phone, no special app or plugin needed.
I'll setup something more permanent eventually and I do eventually want security cameras around the house so I'll just tie this in to the same system, but for now it works decently so I can check up on if I need to go adjust the damper or add wood.