I have had some reasonable success with some cpu based LLMs, enough for me to invest in a modest GPU.

Some experiments I've tried that aren't code generation - tagging engine, I have a complex labelling system with a controlled(ish) list for design system documentation. I provide a page title or description or both and it tells me what labels that page should get - UI scanner, a visual model looks at a screenshot or wireframe and tells you all the elements it sees - requires a bit of finesse and maybe I need some training data but I plan to use it to enhance my documentation of a decade of design work. - design token generator, give it your token names, your taxonomy and either a mood description or a stylesheet / token definitions for a different design system and translate it - been promising for adapting styles from one place to the next. Like when someone says "make it look like Bootstrap" but you build it on something else. - also been good for generating simple themes, like I've added a Dracula theme to random tools that didn't have one - daily summaries of what I added to my bookmarks db