Well I'm eager to hear any suggestions that may be offered since I'm flying to WDW with my 11 month old. However, I do have some ideas (my sis in law flies regularly with her daughter who is 16mos). She said that stickers are always a big hit with her daughter. My SIL sticks them on her own face and her DD thinks it's hilarious (I know this sounds embarassing to have a sticker or two on your face but hey, it's better than a screaming kid, right?). Also, on her suggestion, I am taking a portable DVD player (8 inch screen, bought at walmart for $300, but they do have one with a 7 inch screen for $200). Since the plane is so loud they really are not disturbing and your kiddo probably doesn't even need to hear it. I'm taking Baby Einstein movies, which he loves, but what I'm going to do is take a couple of his favorite ones and put them away the week before, so that when I play them for him on the plane it will be somewhat new.
What about books? Has your little one gotten interested in books yet? Don't forget snacks, snacks, snacks! One thing you might want to remember is to offer your child something to drink during the descent and ascent of the plane..the swallowing will help ears from becoming painful. Hmm, can't think of anything else...hope this helps and I am eager to see other suggestions! Good luck!