My son is in several extra curricular activities, so keeping track of all his stuff is not an easy task.
I have a separate bag for each event...soccer has a sporty backpack with his cleats, shin guards, and jersey. His cub scouts bag is smaller and just holds a binder that carries his book and all the information he needs. He has an organizer/bible zipper bag that has everything he needs for Sunday school. His hip hop/dance backpack has his clothes and shoes inside.
I have a coat closet by the front door that I keep the bags in...I hang them on hangers so they are packed and ready to go!! Same goes for my little girl...her bags are packed too!