Let your ninth grader be a ninth grader. Let her seek activities she enjoys to do. If you are asking for things she should do to become a college applicant…my opinion is…she should do the things she enjoys. Take a strong courseload and get great grades. Enjoy her friends.
The only thing I strongly suggest…start a word document and keep track of her activities starting…in 9th grade. What she did, and approximately how much time she spent doing whatever.