Got an unusual sandwich combo?

My mom would make sandwiches of diced black olives with mayo on toasted sour dough with salt and pepper.

A go to is Butter, cinnamon and sugar on wheat that’s not toasted.

My pops would put mayo and smoked mussels on saltine crackers
add a few slices of apple to the butter cinnamon and sugar and toast the whole deal to get a make shift apple pie sammich