Skowl (previously known as "CoVEs") was my first ever complete JS project. Basically, it was a tiny tool useful to keep track of school homework, calculating for you the estimated time it would take to complete it. It was a very basic vanilla JS single-page web-app, which I had quite a lot of fun creating, though. Curiously, at the time (late 2020), I dind't know how to use databases and web servers, so user's data was stored in downloadable JSON files.