I thought this might be a fun discussion for the time of year that's in it with the kid's heading back to school.
My usual was 4 sandwiches with either crumbed ham or billy roll. Always white stapletons bread with real butter. One or two days a week I would have two slices of my mother mcCambridge style whole-wheat bread with butter and marmite.
The chap next to me in school would always have jam sandwiches.