Here is another one I just saw yesterday. Usually when I need to space a device out to fush it with the wall (when the opening is cut too big) I will make little springs by curling some scrap wire around the end of my needle nose. Late yesterday on a service call I pulled a receptacle and the previous electrician had used a bit of small diameter rubber hose (like automotive fuel line) and just cut off the proper length and slid it over the screw.
Do you mean, when the box is set too far back to utilize the bendable mount tabs on devices, which were designed to be bent back against the box face edge for this very reason... right?
