The third hobby that you can unlock is the Writing Hobby. You can put one of your Sims in this hobby once you've reached Player Level 15. This hobby will require a Writer's Block Desk and a chair for you to begin. Your Sims will write poems, think of plots for short stories and start making novels. Similar to the other hobbies available in the game, levelling up your hobby will unlock home items that will give you XP and additional actions during hobby events.