You don't mind if I borrow...
I recently got called down to help my receptionist whose computer wouldn't work. Upon arriving, I found that the "new guy" who'd just started upstairs left his monitor cable at home and since the receptionist was out (getting the mail), he unplugged her monitor from her computer and set up his desktop - crisis averted. Another new guy attempted to borrow my boss's desk chair on her day off b/c it was more comfortable than his.