I frequently have to create several similar resources or activities in a course. Therefore I have always wanted a possibility to create a copy of a course module without having to re-type all the information. I have now finally gotten around to implementing this. If you click on the little 2 icon then a form similar to the module add form pops up with all the details filled in. Saving it gives a second copy.
I should say that this was not my original idea. First colleagues of mine had suggested it and now I also saw it again as a feature request in the bug tracker.
The 2 in the attached screenshot is not actually an icon, it is just a character. Clearly it would be nice if someone could design a proper icon for this.