I don’t work in IT/Tech at all, but I’ve been an enthusiast since I was young, at first piggybacking off of my dad, then developing my own interests as I got into high school and college. I started self-hosting because I found it interesting and as time progressed I saw the benefits of operating things locally. I only host things within my own network though, because I’m not yet comfortable with how to safely set up external access.

Teacher here; this is the first thing I do on day one with new students! You want to build a classroom community of mutual respect; failure to do so makes for a hostile classroom and a wasted year.

It took about 25 systems of searching to find my first one; I also found the updated ice world foliage in that same system, pretty cool stuff!

While I’m not sure the “walking sim” games are what you’re looking for, I’d add Lifeless Planet and maybe Dear Esther. Once you know what’s going on/what happened, there’s not much point in replaying.

Perhaps not as full featured as the others, but I host wiki.js for my knowledge base on my local server.