- remote preheat for the oven (ready to pop the frozen pizza in right when I walk in the door)
Most ovens these days have a sort of time delay feature so you can set it to turn on X hours from now. Though I will admit it's more convenient not to have to estimate what time you're gonna be home at. Still, there are definitely alternatives to using an internet-connected over.
- cycle end notification for the washer (when I'm in the basement I can't hear the sound to know when to move the clothes to the dryer)
I already know my washing machine takes almost exactly 30 minutes to finish after I turn on the water. I just set a timer on my phone for that amount of time.
BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP BEEP
"Sounds like I left the fridge open."
Seriously, I can hear that beep anywhere in the house.