There may be a life-size polar bear in a cowboy hat and hula skirt standing in front of a tourist shop that makes for memorable souvenir photos, and one could argue that any item is for sale if you make the right offer, but if it isn't specifically there to be sold, it doesn't count.

CNN: Deliciously kitschy and 'Crap Souvenirs'

So a golden rule of survival in this settlement is that every building must have its front door unlocked - and that includes those of the hosts, the Norwegian Polar Institute, and of the French and Germans, the British, the Indians, the Chinese and many others.

BBC: So remote, it could pass for Mars