Not my video, but I just watched this guy build a full AI chess coach with Claude Code and it was genuinely one of the best 'what you can actually build' videos I've seen in a while. It connects to your real games, reviews them like a grandmaster the second you finish, and drills you on your weak spots. All built in a few hours, no dev team.
He uploads a lot of really solid AI build content, and he's got a free community called KVK Automates AI where he breaks this stuff down step by step. I've been getting a lot out of it honestly.