Certainly! Gifting a book is a thoughtful and personal present. You can choose a book that aligns with your friend's interests, hobbies, or favorite genres. Consider the person's taste in literature, and try to pick a book that you think they would enjoy. Additionally, you can include a handwritten note inside the book to add a personal touch and convey your birthday wishes. If you're unsure about their preferences, you could also opt for a popular book or a bestseller. Happy gifting!