Well, I have no wifi at work, and I'd like to turn it off when I leave the house anyways. So, have a tag in my car that turns off wifi, turns on GPS (which I don't need at home) and maybe bluetooth for my car, if I had it off, opens my music app so that I can listen to music via bluetooth, and turns my ringer back up (in case getting in from work). Get to work, have a tag here that turns off wifi (just in case) and puts my ringer on silent. Have one at home that turns wifi back on, and turns my GPS off (maybe ringer up here, too, just in case).
Situations like that, pretty much. I'm sure there's more, but those are my initial plans for mine.