searching for a cheap lunch

[to_love_a_rose]

I'm trying to bring my lunch to work every day, to save money. I'm looking for recipe ideas that

a) can be served cold since I don't have access to a way to heat up my food.
b) don't have processed meats in them. (Ideas for how to use left over chicken, pork, etc. would be great, but I don't eat commercial lunch meat.)
c) are quick to prepare.
d) have veggies in them.
e) can be transported easily. (I take public transit to work, so things that pack light and small are important.)

I like healthy foods, and love tofu, and I try to avoid processed foods when I can.

Ideas? As a thank you, I offer up one idea that I came up with the other day.

( Hummus wraps. )