In Stage 1, we heard that watching a video by itself isn’t often helpful.
Prototype PD ideas with Plotagon iOS (Windows and Mac too) app.
Plotagon creates 3D video clips. You choose the scene and type (with your fingers!) what the cast of characters (canned & roll-your-own) say. It's fun to use and encourages experimentation, which is good for coming up with out-of-the-box ideas.
Next planning session take Plotagon out for a spin. Design characters that are fun and likely to invoke ideas. Ideate and prototype like mad until you find a subject/presentation that clicks. Then roll it out. Or (better yet) present the clip to your attendees.