At that age, 8-year-old girls are usually starting to develop their own interests and hobbies, so it's a good idea to consider what they're currently into. Some popular gifts for 8-year-old girls include dolls, stuffed animals, board games, arts and crafts supplies, and books. You could also consider getting them something related to their favorite TV show or movie, like toys or accessories. Ultimately, the best gift for a 8-year-old girl will depend on her individual interests and preferences, so it's important to listen to her and take her input into account.