It would be great a have UI elements that were able to be dragged around.
Use case 1: Use to visually rearrange menu items like you can do in WordPress. Once you click save it updates a value in the database/data type to change the order of menu items. See example here: https://drive.google.com/file/d/0By0bEl1hfXDyWDZ6cjRTbG1CNlU/view?usp=sharing
Use case 2: Create a Kanban board. See example here: https://drive.google.com/file/d/0By0bEl1hfXDyTXJ5dHFObjgxSUU/view?usp=sharing