Using fairy tales, myths, legends, songs and urban legends are a great way to get the muse invited in, start or end a story, or to get a stuck story going again. Resources abound all over the internet, but I find that Cracked.com is a fun place to start because it blends humor with information (sort of) and everything, including urban legends themselves, should be taken with a grain of salt.
Pick one of these stories and start writing. The legend itself will give you your outline for you. It will help flex unused writing muscles, or help unstick you if you get stuck on a different story. The point is, a writer writes.