Has anybody tried the Go Picnic boxed meals you can order online at amazon and www.gopicnic.com
(I think Costco and a couple other places carry them, too). I found them on Amazon, and I have to say, I really like them. Kind of like fancy lunchables for adults. I mean, they're a little heavy on the sodium, and they're a bit pricey, but pretty reasonable calorie-wise for food that feels indulgent (all are under 500 cals, most under/around 350-400).
Mostly I eat them when I am grumpy about not going out to eat junk food or too lazy to make something for myself, or when I'm going somewhere and I'm not sure what the food situation is going to be like.