Offices can become home to strange collections of objects.
Looking at the promo copies, professional samples, desktop detritus and attempts to personalise a deeply impersonal environment, most of it is useful in some sense or at least harmless.
Some things, however, are a sign of impending doom. Others are a sign that doom has already arrived and is hot-desking just ten feet away.
So you don't get caught unaware, here are 15 of them and why they fill us with terror. Allow us to explain through the medium of the slideshow: