Things like turning the water off, or unplugging things… At minimum I shut the water valve and unplug pretty much anything I can. I’ll usually set the thermostats to be a little more extreme than usual. Do you do anything?
We don’t shut off water or other vital equipment or services since a friend will be over to check on the cats, the cameras still need network connectivity, and I can monitor other things remotely via Home Assistant. Anything that would unnecessarily use power will already put itself into low-power mode. We do set the thermostat to a wider range, and make sure that everything is shut and locked.
It’s also nice to come back to a clean and pleasant home, so we take out the garbage and clean the place before we go.