When I was a kid, we used to make some STRANGE stuff. I think the best was the “fridge” sammich. Whatever you can find. I think the most popular was:
slices raw hot dogs
What were we thinking? LOL
My grandfather’s favorite sandwich is peanut butter & bacon on pumpernickle.
My fav now is egg salad with mustard, fried (just the egg salad & mustard, not the bread) on white toast. mmmmm