Alright so my lab is pretty much functionally complete; it does everything I was hoping it would and much more.

OK so now what :D Do you know of any projects that are self-hostable and serve no functional purpose whatsoever and exist just for fun? Could be silly projects, could be games. I'd like to add a "silly things" section to my publicly facing list of web services.

For instance, I was thinking of hosting a web version of nethack. Also I enjoyed hosting a node of hypermind for a little while just because it was so silly.