I usually carry:
airline tickets
book
electronic game (yahtzee)
magazine
snacks
any medicine I might need
essential toiletries
change of clothes (in case luggage is lost)
camera/film
cell phone
wallet (IDs, CCs, Ins. Cards, etc.)
$1 bills for tipping
Earplanes
Everything Tigger said, plus a bottle of water that I can have handy - sometimes the flights are bumpy and the attendents can't do beverage/snack service.
ooooh ... were they regular glazed or chocolate frosted??
I usually carry toiletries, pins, one change of clothes (in case they lose my baggage), pins, something to snack on, pins, a book to read in flight, pins ...