Ha, the first thing I thought was clothes?
I haven't been to a Sports Authority in a long time and looking at how I workout now I can't think of what I'd get there other than workout clothes. Most of the stuff I'd want you can only get online.
Sorry this isn't much help!
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."