Ask HN: Gift Ideas for 3 year old?

My niece is turning 3 years old soon and I need to bring something for her birthday. I don’t have much experience buying gifts for kids and am interested in learning what others have had success with. She does not have any particular interests yet apart from playing with whatever is in front of her. My price range is up to ~$200. What have you had success with? What have you not had success with?