My grandmother used to make these for road trips (there was a day when McDonald's didn't dot the highway-in fact there wasn't a highway!)
This makes about enough for 1 sandwich. Change the amounts to your taste.
2 shredded carrots, peeled
1 pickle shredded
1-2 oz shredded cheese
enough mayo/miracle whip to your liking
Salt & pepper
Whole wheat bread
Mix it all together, it should have the consistency of a tuna sandwich.