What are some extra things that I can do to help me become a better runner in cross country?

Hi, I'm asking this because I want to know if there's any little things I can do with the team to be more in shape, to help me and my team become faster, any workouts we can do, etc. to become a better running team and better teammates to each other. I really want to make my Senior year memorable and I want to help my team make it to State for the fifth year in a row. Please give us some ideas. Me and my team are actually asking this question as a group. We want to push ourselves to the next level so please help!