I was a contractor for ATT in Atlanta.
We were given a laptop, docking station, and mouse.
We were completely responsible for the physical possesion.
If we left it at work and someone stole it, we were still responsible.
We have a clear cut policy in place. The owner is supposed to take care of the material in his/her custody. Besides we provide them with support team, hardware warranties/ AMC and insurance. Too much of lecturing on the subject takes the whole matter in some other direction. It is done more in “demonstrate” rather than “preach” manner.