I'm not sure if the search function is working right now, but if it is there are a lot of threads with good suggestions for freezer meals. I think any of those things are the same types of things that would travel well in a cooler.
I'm having surgery next week and will be off my feet for several weeks after that, so just prepped a bunch of meals in advance. We'll be eating a lot of duplicates as I made double (or triple) batches of things to save time, but here is what I made (that I can remember):
Chicken Pot Pie
Chicken and Rice Casserole
Pecan Crusted Tilapia (I wouldn't try to travel with this )
Stuffed Pepperoni Bread from Joe's blog (again, not sure how this would travel unless you froze it in advance)
I know your friend will appreciate the help!
It doesn't matter what you think, just that you do.