My story of being paid to do nothing involves spending a month waiting for my own PC and login details at a large corp, being billed at $1200+ a day. It was mind-numbing and demotivating and I soon left.
Hopefully these experiences made me a better manager when I started hiring contractors. I always had a computer & user account ready, scripted any local environments needed and work lined up, plus never asking them to start first thing in the morning due to my experience of waiting around in a new office whilst waiting for everybody I needed to arrive and have their first coffee. Just because somebody is a temporary contractor doesn't mean you can't show them some respect for their time & profession.