Nah, the blanket comes from pictures of various Allied countries wrapping up and storing their works of art in a desperate effort to save them from the Nazis. And when you think about it, you don't want your very expensive Klimt getting scratched in transit, do you? But it seems so clumsy to have the blankets fall off at a crucial moment solely in order to let the neighbours see exactly which painting is getting pinched, and that, of course, opens up various other possibilities.

I am surprised - but pleased - at the popularity of the "mountainous mother hen" :-)