Cold food recipes

My husband goes to work in construction we’re trying to save money so I make him lunch everyday however the things I make aren’t good by the time he eats them because it’s not warm anymore.he works 1-2 hours away from home so I can’t drop off his lunch if I could I would. Anyway, I’ve done pasta salads and other salads but he doesn’t really like lettuce which is hard. I need help finding things that he might like. That are not warm and can be eaten cold? Any suggestions?