Oh yeah, I have a computer for a minecraft server. A computer hosting my kiddo's website(just for fun, its silly, but randomly he will want me to pull it up from outside of the house). That same computer hosts some listeners/watchdogs for a media computer, but I havent actually used much of that information or features in a year (WFH kind of removed the need for me to use my remote tools).
I suppose that's it for now.
Oh, I thought of another use, I run a small business on the side and my interns occasionally don't have a laptop, I give them a crappy laptop. (they are basically just using excel/google sheets)