Lunches are definitely the hardest meal for me. I'm a vegan, so that's an additional challenge.
Try this idea to mix it up:
Place a bed of salad (I like arugula) on some healthy chips (I use flax seed chips), and then add a spoonful of whole-grain rice & quinoa, a spoonful of black beans, and a strip or two of tempeh on top.
Another thing I like to do for lunch is burritos. They are easy to make and pack, and are a good way for vegans to pack in a punch with proteins, grains, and greens. I also use pita bread and hummus a lot.