Who didn't love Mary Poppins fantastic carpet bag?! It was so magical and could fit anything inside. If she carried a purse, I bet it would be something like these! And although you cant fit a hat stand inside, it does have some pretty great transformations.
It's reversible, has piping details and pleats. It's large enough to carry a-lot of treasures (great diaper bag size), and the shoulder strap can be worn or tied in numerous ways. You could even use your favorite scarf or vintage cool belt.