@aaronpk A separate low-voltage net to power all those ESPs?
@aaronpk I can only think of a pneumatic tube system, although it's unlikely to be a last minute addition.
@aaronpk Time capsule!
@aaronpk apologies if I'm repeating advice but get photos or video of all the interiors of the walls so you know where the wires and pipes are in the future.
@aaronpk a fake skeleton..... for future owners
@aaronpk Some sort of metallic object at a consistent height that you’ll remember for locating studs. It could be something as simple as a nail at doorknob height on all of them. Extra points if you can figure out some sort of way to note where your wires and pipes are, like maybe a magnet flipped so that it repels when you use a stud finding magnet. If I could make any upgrade to the walls of my house, that would be it by a mile.
@aaronpk also: speaker wire for wherever you will want speakers. We put ceiling mounted speakers above the sink in our master bathroom and they get used daily.
@aaronpk if your internets will be delivered by your cable tv provider, make sure you have a path for that cable... otherwise the cable company will just butcher your house when they do their install
@aaronpk do you have a plan for light/wall switches yet? If I were building a house I think something like a Shelly relay would be my default go to to connect my lights. Could be a few switches where I’d use a special switch but I really like our Shelly’s. Cost effective too, especially multigang switches.