What extracurricular need to get in Stanford?

Taken directly from Stanfords admission guide these are the kinds of extracurriculars you need to successfully be considered at Stanford.

Extracurricular Activities

Learning about your extracurricular activities and nonacademic interests helps us understand your potential contributions to the Stanford community. Students often assume our primary concern is the number of activities in which a student participates. In fact, an exceptional depth of experience in one or two activities may demonstrate your passion more than minimal participation in five or six clubs. You may also hold down a job or have family responsibilities. These are as important as any other extracurricular activity. In general, we want to understand the impact you have had at your job, in your family, in a club, in your school, or in the larger community, and we want to learn of the impact that experience has had on you.

In some cases, exceptional abilities in athletics may influence our decision if the applicant is otherwise well qualified, but such abilities never, by themselves, ensure admission to Stanford.

Good luck with your college admissions process.

To get into a school like Stanford you need to have really strong ECs. Gaining some state, national, or international level recognition in ECs, like your basketball, will definitely help a lot. You also want to do activities that revolve around what you want to study in college. Like if you want to do STEM, get involved with science related activities and research. Starting your own clubs and initiatives is always good and try to demonstrate leadership in your activities. Community service is also important so get involved in you community as much as possible.