How to make my school more enviro-green? :)?

Hi :) im in highschool, and im trying to make my school go green. I need some BIG ideas :) im prepared to raise money and go to far lengths to accomplish my goals. my school already has recycling bins, an environmental club (im an officer), we do campus cleanups, print on both sides of the paper. Some of the things i am thinking about for my school so far are a compost bin and changing the lights to more effecent light bulbs. someone please help me think of BIGGER BETTER ideas!!thanks so much! :)