I really do not have a favorite household appliance to speak of. None of the appliances inside my house would be considered my fave.
However, there is one that I really, really like to have someday. I don’t know what it’s called technically, but you see it in every diner, dive, or small hole in the wall eateries. It’s a flat top grill/stove, etc.
It is the perfect cooking venue for hash brown, where it gets crispy on the outside and soft on the inside. It’s great for sandwiches too. You can put your filling and your bread and whatever else you want to go in the sandwhich at the same time.