Here at Kindergarten, I mean work, we have a lot of folks that don't know how to keep their greasy paws off of things they shouldn't be touching. When they book a conference room too small for their meetings, they steal chairs from people's desks. When they don't how to put their laptop in presentation mode, they press every button and change all the settings on the projector. When they don't know how to power down a video conference unit, they just rip out all the plugs.
Yes, some of those solutions are successful shortcuts to immediate gratification if you have the brain of a puppy or an infant--it's just not as cute when the offender is an adult with a college degree and a high-paying salary. And so, as the increasingly disgruntled discoverer of these mindless acts in my building, I have to resort to language and pictures that animals and children understand in the vain attempt of preventing more damage from occurring in the future. It's a shame that it comes to passive-aggressive signage, but at least it keeps me from smashing my chair in the window.
(In case you can't see the last one, it reads "You don't win friends by disconnecting cables. Please leave them the way you found them." The graphic of the sad, lonely girl makes it particularly touching. I'll try to update the photo another day.)