Hi Heyler7, I have been away from the boards for a while and just got back today. Hope you have used CateC's ideas. She has some good ones. Maybe I can throw in one or two more.
If your husband can carry a cooler, then chop up a fruit salad using any combination of fresh and canned fruits. Crushed pineapple, chopped apple, chunks of oranges, peaches, strawberries, etc. Any combination and any anmount. You may need to add a little"Fruit Fresh" to keep apples, bananas,etc. from turning brown. Use as is, or add a little sweetner or sugar if needed. You can also fold in vanilla yogurt.
Also, leftovers are great. Try using leftover fish and making a fish sandwich. On bread or a bun with tarter sauce, lettuce, cheese. Leftover pizza was always a winner with my kids. Then you can always make leftover steak sandwiches, topping off any way you like-pickles, miracle whip, etc.
In hot summer, pack low fat cheese, crackers with some fresh chopped veggies such as tomatoes, cucumbers, and bell pepper and add a piece or two of fruit.
Try boiled/deviled eggs. And as a side dish, add potatoe salad made with fat free Italian salad dressing instead of mayo.
Lean ham and chicken can be used in a variety of ways besides on a sandwich.
I hope this helps!
ldbayou