For those who have everything
It looks like a humble paper airplane, and doesn't cost much more, but the Soarigami Armrest Divider ($25) might finally be the device that ends all wars for the airplane armrest. Made of a sheet of light foldable plastic, it clamps to the armrest when you tighten its screws, creating two armrests from one. Finally on sale more than two years after the concept was unveiled, Soarigami "eliminates the whole ‘Stop touching me' argument" that kids are prone to. For any traveler "repulsed by human contact," it's a godsend.