Consider all the avid readers who are getting new devices among their holiday gifts. Some of those readers will be new to ebooks. Think about how you can serve them. Could you write a couple of novellas or three short stories, and publish them in the next three months?
If you’re a nonfiction writer, the holidays offer opportunities for you as well. Remember: short sells. The digital world has made attention spans shorter. Write short ebooks, and publish them.