> Once you actually use the toaster the hierarchy inverts. The toaster runs your entire household while it is powered on.

More than once I have gone to my toaster in the morning and found cold bread there that someone toasted the day before and forgot about. Because obviously you push the toast down and go do something else. You don’t need to be staring at it continuously, nor are other people impacted by your toast unless they are waiting to make their own. Toasting bread doesn’t have to affect an entire household.