I’ve got a raspberry pi 4 (8GB) running Kodi (via osmc) hooked up to our tv. The tv itself is a Roku tv that isn’t allowed to connect to the internet.
I’ve also got a pc that used to be my streaming/video editing rig back when I used to make videos, but I repurposed it as my server, and it runs Jellyfin, along with a host of other apps/services for me and my family.
The pc is older, but as a server it works great. Biggest drawback is power consumption, it’s not nearly as efficient as a mini pc with a n100 or something similar, but for my purposes it works great.