Urban Sketchers put together a beautiful poster calling for donations to the Red Cross and Doctors Without Borders for Haiti (above). Please be sure to visit their site and spread the word. The poster is available for download to print and post to remind people to donate.
Also, Studio 1482 will send you a signed 13"x 19" limited edition print from one of their amazing artists for every $50 donation to CARE. Visit their site for more info.