May I also add.... a few days ago we flew with a delightful little girl who was going as an unnaccompanied minor- whoever her parents are, I'd like to say I love you, because you sent her well packed and prepared for a long(ish)flight.
She had her own water bottle, she had a jacket in case she got cold, she had a nintendo DS to keep her amused, she had some fruit to snack on, she had a book with your phone numbers in it, she had a calling card, and she had her journal/diary which kept her writing for most of the flight.
We didn't need to get her a thing aside from her lunch. She also had the most beautiful manners I've seen in a child for a long long time!!! AND she left her seat tidy when she left! Mum & Dad obviously took pride in teaching her some excellent manners... wish all the passengers were like her!