Here are just a few quick ideas of what I fall back on when necessary.
Cold cereal and milk (bring the milk in a thermos), plus fruit.
salad.... I buy the bagged stuff to make it faster. I throw in a handful of baby carrots and some prewashed grape tomatoes.... sometimes cucumber if I have the time to cut it up. For protein I might put a few hardboiled egg whites or some other leftover lean meat on top (chicken breast, pork tenderloin). I premeasure my dressing into a tiny tupperware container. Don't forget your fork!
Sandwich made with Hormel all-natural lunch meat (the honey ham and smoked turkey are both good). Three slices of the turkey are 1 point and four slices of the ham are 1 point. That on a large one point wrap (Smart Tortilla Company) loaded with spinach, lettuce, and tomato is very filling. Sometimes if I want to spend more points I will spread a wedge of LC cheese on the wrap or maybe some guacamole (the 100 calorie packs work well). I might bring along a handful of baby carrots or some celery sticks also or Baked Lays if I really want a special treat.
If you need something warm you could bring soup or oatmeal or even leftovers in a thermos. If you pre-warm your thermos in the morning with hot water and be sure the food is really hot when you load the thermos, it will still be hot at lunch.
Yogurt parfait.... 1/2 C fat free vanilla yogurt (2 pts for the Stonyfield Farms) in one large container, and bring along a serving of chopped fruit in another container and then a small baggie of granola or nuts or some other cereal. Make your own parfait at lunchtime by adding the cereal and fruit to the yogurt. You can make this more or less points, depending on how much fruit you add and what kind/portion of cereal you use. When I am using more points I will use the Special K lowfat granola. When I am trying to use less points, I will use a few Tb. of Fiberone. Strawberries, blueberries, banana, mango, pineapple all work well for this.
SOrry... I'm not sure if you are doing Weight Watchers and I noticed that I kind of automatically added point for some of this stuff.... ignore that info if necessary! Anyhow, hope some of this helps............P