To whet your appetite and keep your writing fingers limber, take a good look at the photo, or let a prompt settle in your mind. Set a timer for a reasonable amount of time, be that five, fifteen, or thirty minutes. Then start writing.
If this mask of Zeus could speak, what would it say? Would it tell strange tales? Would it warn of impending doom?
What was your experience with mythology while growing up? Was there one story in particular that you remember vividly? Why do you think that is?
Write an article or blog post for people who want to visit ancient historical sites in Greece.