Every avid Harry Potter fan needs a copy of the books, for starters. They’ll likely treasure a boxed set, and many fans even prefer to have at least two (or more!) sets of the books – one to read over and over again and one to keep in good condition on their bookshelf. Many people also like to have a copy of each different version of the boxed sets, with different illustrations on the covers.
Other Potter essentials include copies of the movies on DVD or Blu-Ray, and a scarf indicating your favorite Hogwarts house.