Loaded quake on all the computers in a classroom. Which were conveniently arranged to make it impossible for a teacher to see all screens at once. And with no effort we were able to play multi-player matches basically every class. A substitute even joined in one time.
That’s way less than what I pay to vultr for a less powerful VPS to host my own set of services (lemmy, gotosocial, gitea). I gotta find a cheaper host 🙃.