I think we got them at Walgreens and that they’re called something like “Travel Eze.”
You could also listen to an audio book and if your siblings don’t want to listen to it, you might try listening to it with headphones or an iPod or other such things.
“Taking off hats, putting on hats, wastes minutes; minutes add up to hours; I get a week's extra work in the year by keeping this hat on.” -- Walter R. Brooks,