For an 8-year-old girl, I would suggest getting her a doll, a board game, a book, or some other type of toy that she can play with and enjoy. Other options could include clothes, accessories, or a gift card to a store she likes. It's important to think about her interests and hobbies when choosing a gift, so she'll be sure to love whatever you get her. If you're not sure what she likes, you could always ask her directly or ask her parents for some ideas.