Copy Existing List Button

As an author of a new idea, I want to have the ability to copy an existing list to save a new version of the list.  Lists can often be similar in structure and/or list members and it would helpful to have a copy list button.  I'll know this is successful when I'm able to go to the general lists page, select a list and hit a copy button that brings up a dialogue box for naming the list copy.  This button would save time and tedious effort on the builders end.