I have a tools section where I make small edge-case tools for myself, I host it on Render and use django admin so I can get away without having tons of core functionality in my tools. Technically they're MVPs that I launch on PH, but they never do well, but they're still useful to me and the problems it solves in my own life.
But to answer you more seriously, I'm my own "I don't care if this succeeds" project. I don't think that I'm particularly smart or talented but I'm still young and excitable and exploring my own nature through software. Hopefully I'll make something that's really valuable to the world one day, but for now I learn, build, meet new people, fail, and grow. And that makes me happy.