Toasters are cheap in the short run but, due to their inefficiency, they must cost a huge amount over their lifetime.
Lots of toasters will activate all the resistance wires in all the slots even when you are making a single slice.
This is good for heating the kitchen but not when you are waiting for breakfast.
Today’s invention is a toaster in which the toast is slid horizontally. The heating units are free to move vertically so that they make individual contact with the bread.
Only when that happens does an individual unit switch on -thus transferring all the heat to the proto-toast.