How do you stay occupied on long plane flights?

I have a 17 hour plane flight to South Africa in August (over 34 hours on a plane total). I don't want to take anything too expensive because we are staying in townships, and I know I won't sleep for most of the flight... I am a nervous flyer, so I don't get very far in books when I fly... What are good... show more I have a 17 hour plane flight to South Africa in August (over 34 hours on a plane total). I don't want to take anything too expensive because we are staying in townships, and I know I won't sleep for most of the flight... I am a nervous flyer, so I don't get very far in books when I fly... What are good things to pass time on a long flight? Any tips to keep busy? Any crafts or puzzles that are good for flights?
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