Comment 3 for bug 687749

I was about to create something similar: "Paste image from clipboard to a new file". Creating from other sources might be a little more difficult. For each mime/type should be some sort of default assumptions. For example, if you copy an image to clipboard (let's say a screenshot of a region) and then paste it, could do it with timestamp_clipboard-image.jpg, and customizable from an XML/YAML.