As an author, you will wear many hats along your writing journey, and each one represents a different task. Before I jumped into the writing world, I didn't realize how many expectations there were (and how many different jobs that needed to be done).
Thinking Cap - Use this to plot and draft your story. You may need it to get your character out of a jam.
Research Cap - This hat is for all the research and interviews that you'll need along the way. (I picked a replica of Indiana Jones' hat. He's the right combination of research and adventure.)
Hard Hat - This is your working hat. You need this to build your draft and for your many rounds of editing and critiques.
Genre-specific - This is a must for mystery writers. And you may need a magnifying glass to complete the look. This is for adding plot twists, red herrings, and clues.
Marketing Hat - Marketing and promotion are huge jobs. It takes a lot of time and energy to set up blog tours, interviews, events, and social media sites. You'll find that you wear this one more than you ever thought.
Business Hat - You need this for all of your accounting and paperwork tasks. I wear mine for tracking mileage, collecting receipts, filing sales tax, completing forms, and tracking sales. It's also my analytical hat for reviewing sales numbers and web/social media metrics.
Party Hat - You need this for the celebrations! And I hope there are many along your writing journey.