Welcome to FlyerTalk!
Bring:
Aspirin or Tylenol;
wet wipes;
moisturizers;
a noise reduction headphone or ear plugs (they work great to reduce the ear-popping symptoms);
digital camera;
extra batteries;
a good book or two (travel guides are great);
snacks in case the food isn't up to par;
your own neck pillow;
your own earphones if you don't have noise reduction headsets (the airline headsets in economy are awful);
spare travel shampoo or soap & bathroom kit if you get stranded somewhere;
That should do it. Less is more, often times!
Enjoy your flight.