I've heard a few people tell they use a Wiki. Do you host it on your own server? Is is a public wiki, or a private one? I'm very curious.
I started it 10 years ago, and side benefit was that writing a Wiki is a good project to learn about web programming. The first version was of course riddled with XSS and escaping problems :-/
I think writing a Wiki is still a good exercise now. I'm not a front end person per se, but every programmer should know something about the web. I'm always a little taken aback when I meet some back end guy who doesn't know how HTTP or the browser works.
And IMO there is too much bloated JS on the web now. I think people forgot how to make a simple web app with a form and plain buttons. There are too many fast-moving frameworks, so just doing it "raw" (or to WSGI) is a good learning exercise.