For me, I usually bring along a variety of MH meals (I got a really good deal on a bunch of cases, so it is what I use most of the time). Favs include beef stroganoff, the pasta with meat sauce, chicken teriyaki (like the sweet at breakfast for whatever reason), the fajitas are good as well (bring tortillas).
I also usually take some summer sausage and hard cheese for lunches, snacks and such. I have also been known to bring the asian ramen bowls that just require the addition of hot water and supplement protein with packaged salmon, tuna, or chicken.
Can't forget the instant mashed potatoes which can be added to almost any meal for some extra calories. Depending on your tastes bring additional seasonings to liven the meals up (I like the individual packets of tabasco).
And definitely try the MH blueberry cheesecake!
(I personally stay away from the MH chili mac as it does not agree with me)
For Condiments raid a KFC, gas stations, or try pressing a site like
this... 
