High school rules book, casebook, and any other publications I've purchased for the year.
NCAA rules book, casebook, and official's manual
A few materials gathered from camps pertaining to pregame and points of emphasis
Whistles
Needles (for taking air out of the ball. A flat ball goes in more
)
Shoe de-stink stuff (the little blue can that sprays inside your shoe. I don't know the name)
Stickers for the official book
Towel/wet bag
everything else is uniforms.