Buy a T-shirt, donate to the Red Crescent
Get a T-shirt with the awesome Arab revolution logo on the right from here (EU store) or here (US store) and the proceeds go to the Red Crescent, which has been doing incredible work tending to the injured in the Arab uprisings and particularly in Libya where its volunteers face great danger to help others.
The Red Crescent is the regional equivalent of the Red Cross, with which it partners to provide emergency relief across the world.