I would use the money to help fund more public engagement activities within schools. I would like to ask the students how they would like me to spend to money on particular activities.
I never received much public engagement from real scientists when I was in school, so I think it is important that you get to know what a real scientist is and what they do so that you can get a better idea of the science world and help you decide whether you might like to be a part of it in the future.
My plans are to put together a photoproject to showcase diverse role models in Science. Scientists come from all sort of backgrounds, but many professors are men. I feel showcasing more diverse role models would allow students to feel more at place with career in science by giving them figures they can relate to.