And then there's the Ostrich Pillow, a bean-filled mask that covers your entire head but has a hole for your nose and mouth so you can breathe.

WSJ: The Best Travel Pillows: Desperately Seeking Slumber

Martin Bean, the Open University's vice chancellor and head of the Futurelearn project, has joined Prime Minister David Cameron's delegation to India, which has been trying to promote UK universities.

BBC: Online university giant gets bigger