Earlier quoted context omitted.
> make it smart via an Apple TV I repurpose the old laptops that I seem to accumulate for this. Just about anything made in the last 10 years can handle at least 1080p video, and will have an HDMI output. I add a small wireless keyboard and use my regular desktop environment. But you can add a remote and use one of the open source media centre suites. I do wish more TVs had a monitor-like sleep mode and accepted the…
We do the same and it works well. We prefer a handheld keyboard/mouse to control it. We've tried several and the Lenovo N5902 [1] is our favorite by far. It's also useful to have the Unified Remote server [2] running on the media computer so you can control it from your phone when you need to. [1] https://www.newegg.com/p/09N-00A7-00001 [2] https://www.unifiedremote.com/
https://www.amazon.ca/Rii-Wireless-Keyboard-Compatible-Raspb...
Of course it's not a real keyboard and mouse but it works fine.
I do use an universal remote most of the time though (Harmony 700), but I use the Rii when I exit Kodi and I'm back to my HTPC's Linux environment. The Rii is then enough to open a browser and YouTube, for example.