I have a sunbeam toaster that was made around 1960 and it still works fine and it’s design is far better than anything currently available.
It has a bimetallic sensor that detects the temperature of the toast, and this means I can put a frozen piece of toast in and it’ll come out when it’s ready. Further I don’t have to touch anything I just drop the slice in it and it automatically goes down and then rises when it’s done.
Current day models and I tried to look for one once, basically suck they are just heating elements and timers nothing terribly creative. Even though some of the models are extremely expensive with very cool looking displays.

