Let this be a warning to everyone on summer vacation: If you have any pranksters in your office, this could happen to you too. According to this post, some guy named Mike returned to work after a few days to find things pretty much the same--except that his entire workstation was covered in cardboard, right down to the phone, computer screens, picture frames and pencil holder.
The office gremlins even added some touches of their own, such as a mini-fridge and "flagrant system error" warnings scrawled across one of the cardboard LCD screens. But you really must view the photos to fully appreciate their efforts.
We hope only that Mike's ingenious co-workers apply themselves as much to their jobs.