What's a good low-carb lunch to take to work?

I'm doing the low-carb (atkins) diet and was wondering if anyone had some suggestions for some things I can take to work for lunch. Most of the stuff I eat now are meat, so that isn't going to work. I can't take pork chops, steak, bacon, sausage, or eggs to work. What can I take that doesn't need to be cooked and is low-carb? Thanks.