I have a workflow that automatically generates a text message with specific wording that send daily. I saved that specific workflow to NC so that instead of finding workflow app, opening the app, searching for that specific workflow (I've made many), and launching it, I can just tap the icon in notification center and the text message is automatically generated. All I have to do is tap "send."
Though I haven't played around yet. You can create workflows that take content from your clipboard and start running from NC. For example, if I made a workflow that generates an email with the text I've copied to the clipboard, I could save that workflow to NC to make the processes easier. One tap of the icon in NC and the email will automatically be generated.
These things don't save you hours of effort, but that are efficient little shortcuts.