HI there,
great suggestions so far. also (and this depends entirely on pharmaceutical legislation and under what circumstances you'd allow it to be used) putting a salbutamol (ventolin) inhaler in the bag can be useful... the number of players who don't keep theirs close enough by the field is huge!
as mentioned, these things can get bigger than Ben Hurr but you'll figure out what you might like to add or take out as the season goes along.
good luck,
msk101