Extracurricular for admission process

<p>Hey, I will be applying for boarding schools in 2014 fall. I was wondering whether I can video myself doing an extracurricular that the school doesnt have. Will it be helpful in the application? Cause I wont be able to provide anything for the school as the school doesnt have that extracurricular! Also, is it possible to video down more than 1 of me doing an extracurricular? And how long should the video be? Thanks</p>