Growing up my whole life, my mom was telling me how incredible and special I was and that I was going to change the world. I think it's important for girls to know that they can change the world, that they do have an impact.
We could do some household and neighborhood or town wind energy. But even this will run up eventually against the problem of needing an underlying fossil fuel economy to fabricate the hardware. Same with photovoltaic (solar) energy. We're going to be disappointed by what these things can do for us.