I've become partial to interview questions where the interviewee just has to build something like a rock paper scissors game or command line to do list app. Simple prompt, easily extendable as well. It's jarring how many people with 5+ years of experience completely fail on this kind of interview.

Any experienced engineer should have no trouble with it. There's no hiding here. - candidate just needs to deliver something working, something relatively clean, and be reasonably pleasant to pair with. No leetcode grinding necessary, though I have found that those who did well on this problem also generally got high scores from my colleagues who do ask LC questions.