My 12th grade son is in fall and spring soccer on a homeschool soccer team, and is involved in Bible quiz at our local church. He also is a member of the local National Homeschool Honor Society, and is president of his area chapter this year, so he has monthly meetings to plan for and be in charge of. He just finished 3 months of life guarding at an area swimming pool, so he can get back to concentrating on school again! He had taken 6 years of piano lessons on top of everything, prior to this year.
My 10th grade daughter loves musical theater - she is currently involved in a local production at a children's theater - which keeps her busy about 4-6 hours a week at night. She is also involved in Bible quizzing, and works in the church nursery on Sundays. She has taken 7 years of piano lessons prior to this year, as well as art classes.