MtnSpirit, I am a student and unemployed too. I know what your saying, but volunteering looks really good on scholarships!!!
I think that if you are doing these things solely to try to win her back, it will come across as passive aggressive, because thats exactly what it is. Any changes that you make should be for you, and usually, as a happy coincidence, M's usually follow suit. Its the idea of making positive changes in yourself to affect positive changes in the world around you.
I guess I gave the wrong finger to the wrong man...