When I was a kid we had an two-slice electric "Side door Toaster" when we stayed in our caravan on holiday.
It had two spring-loaded fold-up doors on each side which you put the toast on. Then they folder vertically to put the toast near the elements. Half way through you pulled down the doors, flipped the slices over and toasted the other half.
It had two spring-loaded fold-up doors on each side which you put the toast on. Then they folder vertically to put the toast near the elements. Half way through you pulled down the doors, flipped the slices over and toasted the other half.
https://www.ronebergcairns.com/2006onwards/home06_026.html
Probably easier to construct that a pop-up