I have some lights and speakers, that's it. I like some automation things like speakers get set to X volume at 7pm, you can say "goodnight" and it has a list of items it does, asks for alarm, turns off all Lights, set speaker volumes lower, sets music in the living room for the doggo.

I have my network locked down and and IoT ssid. I like a few of the conveniences and I watch my network and traffic like a hawk.