Wow that’s a cool setup, I’ll definitely steal some ideas.
I’m used to slinging lots of data around and one of the more helpful tools for general purpose automation has been n8n. Though it might have limited use if you’re not trying to glue all kinds of services together. I also host actualbudget to keep track of finances. Both are running comfortably in their own little docker containers.
I’m currently looking into setting up Nextcloud and experimenting some more with presence detection for Home Assistant. I’m considering CO2 sensors, which will either tell me my home is ventilated properly, or which rooms are occupied.