We all like like pasta lunches here, some of the ones we do...
tinned tuna, mayo, sweetcorn, bit of celery and finely chopped red onion
chargrilled veg sauce (tomato based) with grated cheddar mixed in
Tomato based sauce with chicken breast or butter beans
Pesto with white beans or chicken
Olive oil, garlic, cherry toms and chickpeas or tuna flakes
Salmon and peas
Chunks of any sausage you like, or crispy bacon, peas and hardboiled eggs (sounds strange but it's nice!)
Broccoli, peas, olive oil, pine nuts and garlic (or just put in pesto)
"Grown up" ones:
Smoked peppered mackerel mixed with bulgar wheat, lemon juice, pine nuts, oil, cooked broccoli and cannelini beans
Chilli, peanut butter and chopped peanuts, garlic, lime juice, soy or fish sauce. Usually on noodles but sometimes on italian pasta, who cares!
Chicken, curry powder, greek yoghurt, grapes, celery
Salami and roasted peppers