The individually vacuum-packed frozen fish filets at Costco are great. They have salmon, Mahi Mahi, etc. When I was in grad school & working full time, I would often cook some boneless, skinless chicken breasts, then shred/cube the meat, and freeze it. That way I could easily defrost & toss it into some pasta w/sauce, or pretty much anything, with very little prep time. For packaged meals/snacks, I like the Thai Kitchen products--noodle bowls, etc. These are easy to throw in the microwave when you walk through the door at 11pm after a 17-hour work/travel day! Costco also sells 3-packs of decent guacamole that you can keep refrigerated/unopened for at least a couple of weeks, or put in the freezer for longer. They defrost quickly.