Check out these photos from the Flagstaff Freethinkers of Arizona, who have been volunteering by filling sandbags as a service project!
This article describes the need for such service and similar work done by other groups:http://azdailysun.com/news/local/volunteers-needed-to-fill-sandbags/article_f255c03a-f362-11e2-ac76-001a4bcf887a.html