Michael Schrage writes about the different ways to create prototypes. He mentions periodic prototyping, which means that every two weeks (or another interval) a team must show what they've created. Ready, or not.
Sprint demos are a form of periodic prototype. Fact is, if you're using Scrum as your Agile framework you should be using proof of concepts and prototypes to validate your product and feature ideas.
I use the Scrum Pattern language when I'm coaching Agile teams. What's my favorite pattern?
Yesterday's Weather.
How does it work? Well, in it's basic form, you forecast the story points for the upcoming sprint based on the story points completed in the last sprint. By using this pattern, I've reduced the sprint planning meeting from an hour of chattering debate to five easy breezy minutes.
Instead of directing employees and managing their tasks, you create an environment where they can be successful. Ponder this paragraph.
The effective Agile Leader spends less time managing for results and more time designing environment that create results. They spend less time telling others what to do, and more time creating conditions that empower and enable others to know what they need to do, and to be in action doing it.
The authors refer to catalyzing leadership. If you wish to learn more about catalyst leadership, you may want to read Leadership Agility where a chapter is devoted to the qualities of a catalyst leader.