Pushing a single flexbox item to the flexbox-end and wrapping

When using CSS flexbox, I have this tendency to use margin: auto whenever I want to push single item to the flex-end. For example (assuming ltr mode here and for the rest of this note), inside display:flex; flex-direction: column I would put margin-left: auto on the last item, to make it stick to the right edge, while keeping rest of them to the left. Fine, you can do that, but it's probably not…