Those containers look perfect, where did you find them?
I saw something online once that suggested, for salads in mason jars, that you use a vacuum sealer with the mason jar attachment to keep the lettuce crisp. Once I ever get a vacuum sealer I will definitely try that.
My ultimate badass lunch is lentil soup - cheap and healthy and I can freeze single serve "bricks" of it in mini loaf pans. I've been doing more leftovers lately and less soup though, and also trying to clean out all of the frozen soup bricks from the freezer, I'm sure there are more hiding behind things!
My other favorite badass lunch is homemade frozen burritos. Once every couple of months I'll do a super awesome burrito bar for dinner. All the fixins (well those that freeze well at least). A couple pounds of taco meat and a pound or two of taco-flavored chicken, grilled peppers and onions, fresh guac, tasty cheeses, rice, beans, corn, etc. Then after we eat, I'll make all of the extras into burritos that get wrapped in foil and labeled with a different colored "gold star" sticker - one color for mine and a different color for boyfriend. It works better if you pull out the burrito the night before to thaw, I like to bake mine if I can, it takes a while but these are SO good and super easy. Damn, now I need to make some ;)