Again I don’t know much about the application and admissions,and I understand that in general you put in-school and out of school extracurriculars, but do you list your hobbies and such? For example, I built and coded a website for my parent’s business, but that’s my PARENT’S business, and I’m not sure whether that would be counted b/c if so many people could just lie. Is that something you could put on your app?
You can only list 10 activities for you common app. Even less for some not common app schools.
I would suggest putting it in additional information at least. I do not know if that counts as an activity because it is your parent’s business, but colleges would still like to know. I would put NHS, Environmental Groups, Church Groups, student government, and such before anything else in your activities.