[ Vegetarian & Vegan ] Open Question : vegetarian meals to pack for school?

My freshman year I just took something like PB&J, an apple, and pita chips every day, and I ate school lunches two days a week (cheese pizza one day, salad another) Well the school I'm going to this year offers NO vegetarian options. no cheese pizza (only pepperoni), no salad, nothing. I'm getting really bored of taking the same things over again so can someone give me some ideas please? (I ABSOULTELY HATE eating things cold that are supposed to be hot, BUT I do have access to a microwave.) -thanks:)