I have ( 2) 5 volt transformers that stay plugged in all the time, since they are essentially just phone chargers. They run a few LED lights. They're cool to look at night when I get up to pee (sorry for the TMI...it's an old man thing...LOL).
Other than that, I have everything on power strips, which get shut off. I have had lightening strikes fry stuff and I think that overall, its a good idea to leave your DCS wifi off. Not to mention, my other devices are always trying to connect to it.
On a related note, my wife asked why there was a fire extinguisher in there. She got the "deer in the headlights look".