Looking for portable healthy food

[postulater]

4. Here's what I take for lunch nearly every day

An insulated lunch box with freezer packs that fit.

In it I have:
1 container in which I put a half cup of frozen blueberries
and a cup of Dannon Plain Natural Yogurt.
1 container with chopped dark leaf lettuce, 4 ounces of either cold grilled chicken breast or nice Wisconsin cheese plus whatever other finger vegetables I have on hand (celery, peapods, cherry tomatoes, etc)

A baggie of roasted unsalted shelled sunflower seeds that I put on the salad.
A baggie of chopped walnuts (pecans are too expensive) that I put into the yogurt.

I work inside but the cooler packs keep things pretty frosty till lunch.

The variety in the salad and the fruit on the yogurt make it so I don't get tired of the same thing. Been doing this for a couple years. I don't miss the bread.