I'm retired, but when I was working, I used to bring soup for lunch. I bought a couple of soup mugs with secure sealed tops. This permitted me to bring my own homemade soups. I would bring a sandwich usually, and some kind of veg - a small salad, or just some carrot sticks, jicama slices, something that I could nibble. I like them without anything, but once in a while would bring some hummus or a homemade dressing, like a thick ranch or blue cheese. I'd also bring a piece of fruit, which I usually saved for an afternoon snack. I find that soup is very restorative, and I eat it pretty much everyday - sometimes even for breakfast! I still mainly like my own soups best, but I did find a good imported soup that has no preservatives and very delicious flavors - I heated up some of that today - mushroom, potato and barley - oh, yeah, delicious. We had a microwave and refrigerator on every floor of the company I last worked at, which gave us a lot of flexibility. I think someone also brought in a toaster.