OnlyLANs
white_nrdy
There are a lot of recommendations to work on other SW projects. Be careful with this if there is a clause in your employment agreement (if you have one) regarding any work you do during work hours being owned by them. Especially don't do it on your work PC.
Idk if you're being sarcastic or anything, but I'll actually answer the question. Apologies if this is unnecessary.
You can hook up an Over the Air antenna (like one listed in this article ), which you can hook up directly to a lot of TVs I think.
Instead of connecting to your TV, you can get an IP Tv Tuner, like HDHomeRun. This let's you connect the antenna to your home network and access the feed from your computer and their app. It also provides a video stream that Jellyfin and Plex (I'd bet Kodi as well) can access.
How did you "retire in your 20s"? How do you support yourself? Family money?