Looking for an atheist symbol? There is no universally recognized one. However, the "Darwin fish," a footed version of the Christian Ichthys, has become popular, as has using the word "atheist," or simply "A."
The born atheist fish, created in 2010 by artist M. Lee, combines the outline of a Darwin fish, with the word "atheist, and throws in an "A" (actually an "at" symbol), for good luck. Additionally, the fish is smiling, adding a little good humor to the battle of the symbols
The born atheist fish is available for use for any non-money generating purpose.