I happened on this post by Two Writing Teachers about joining Laurie Halse Anderson's "15 minutes a day" writing challenge and thought...hmmm, sounds like a good way to restart the writing engine. It obviously works for Laurie Halse Anderson, successful author of books for young readers to young adults (or readers of any age, really).
Writing for 15 minutes a day with little purpose other than to get my pen and ideas moving will be good on so many levels. Grabbing a new notebook right now.