Bring your own everything. It's safer than putting yourself at the airline's mercy. Bring a travel pillow, a blanket or sweater if you tend to get cold, entertainment (PSP, iPod), headphones (preferably noise-canceling ones, which not only combat engine noise — brutal in the rear of the plane — but make it so that you can hear the plane's entertainment system). And, of course, food: while on-board prices aren't extortionate (a charge airports are far more guilty of), the quality is iffy and the selection meager.