Slightly off-topic but I've often daydreamed about a kind of Lisp-driven 3D Movie Maker (https://en.wikipedia.org/wiki/3D_Movie_Maker) where you could build movies from a REPL/SLIME the same way you do ordinary Lisp code -- evaluate a form, see the scene play out. With additions like modern text-to-speech and ML models generating meshes/textures, it could be a very pliable medium for a lone filmmaker to put together a movie all on their own, or even adopt a GitOps-y approach where multiple people (e.g. a script supervisor, cinematographer, light rigger) can collaborate through pull requests and code reviews.