What's your weirdest or most unique self-hosted use case and solution?

I’m self hosting on an old laptop, and I’m a convert for life. Self-hosting is amazing. Looking for other people’s weirdest examples of what they’re doing as inspiration.

My example, I recently set up a grammar script, where I have a couple 8b LLMs and an html landing page. I upload a doc and it corrects grammar and highlights changes it made, or just proofreads and I make changes manually. I can upload a novel before bed, and have suggestions based on specific writing styles in the morning. All local, perfectly suited for my own work.