. . . to keep a very active, likely newly-walking 9-month old who hates to be confined in anything content on a cross-country airplane flight? The only time she is still is when she's sound asleep, and she doesn't go to sleep if there is anything going on around her. She is also very vocal, and I don't want her to annoy those around us. I'm not willing to give her benadryl just to make her sleep. I figure my best bet is to keep her entertained. She'll have her own seat with her carseat.