We're going to Australia at the end of March and I think a slanket would be brilliant for the flight, as well as being generally lovely and cosy in the evenings (would save on heating too [smug green emoticon])
But is this something that you should wear strictly in the privacy of one's own home? Or is the prospect of a 24 hour flight with a 4 year old DD scary enough to warrant taking additional creature comforts?