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.
“There ought to be a Princess. Terror-stricken and chained to a rock, and all that sort of thing. Boy, can't you arrange a Princess?” -- Kenneth Grahame,