All of your gear. Cleats, shin guards, uniform, hockey stick, mouth guard, goggles, and probably a couple of balls to practice with. Of course, if you're a goalie, you'll also need to bring body armor.

First Aid kit. Bring on the ice packs and ibuprofen.

Reusable water bottle. You know better than to mess around with dehydration.

Wholehearted determination. 

You're gonna be the very best…like no one ever was.