I am slowly making my home "smarter" but only installing things that don't use the internet or require or use an external service or account. Secondly for ever

I am slowly making my home "smarter" but only installing things that don't use the internet or require or use an external service or account. Secondly for everything i install I write a document on how it works, how to override it or bypass it if it breaks, and how to remove it when I move out.