DILLA if you are looking for a flying charity will you consider RAM? They really need the donations and they really do a world of good. They do vision as well as medical dental and even animal care for those in need all over the world. Their website is
www.ramusa.org
They only have an old DC-3 and a Cessna but are always looking for pilots that have access to their own aircraft and are willing to fly them to remote locations. Maybe if you are in a frac. club they could help.