I've given up actually making their lunches myself. They're 22 and 19, and in university.
I make available pita pockets and tortillas (to make wraps) for my daughter, who detests bread, and a multi-grain bread for my son, who loves bread.
I rarely buy cold cuts, so on Sunday evening, I'll rotisserie a turkey/chicken, bake a piece of ham, slow-cook a small pot roast, something like that, to use for sandwiches. There's always lettuce, spinach, tomatoes, condiments, etc. in the fridge, along with cheddar and swiss (no slices, please, Mom). Make it your way!