Depends on the kind of job you're going for; I don't think there's a single "general programming" project that would win people over regardless of the role

Based on what you've mentioned, sounds like you're a web person? Maybe back-end or full-stack?

I've heard people say a CMS is a good baseline "I can do web dev" project. It's a CRUD app, but one of moderate complexity which involves some interesting problems. Demonstrates full-stack skills, and also leaves room to tune it to your particular strengths (front-end ninja? do a fancy SPA; back-end focused? do it all server-rendered with some Bootstrap styles and maybe have it support multiple databases or something. etc.)

But in general: if possible, do projects that are specific to the job you want (if getting a job is the goal of them)