We travelled when DS1 was 22 months & DS2 8 months... Never will I do it again with two sitting on our laps! Anyway I packed heaps of little things, new things that if he didn't like I could throw out during transit. He actually liked playing with the TV remote on the plane the best and the things that came with the food tray! So don't take anything to big or expensive as no doubt the disposal cups will entertain more.

Big W had great stuff for $1, $2 like small packets of farm animals, small toy helicopters... These worked well and a couple of handy manny sticker books which he liked at the time. He spent ages putting the stickers on his drink bottle. Emirates also gave us free kids stuff.... We were long haul 26 hours to Italy!