As you work with ideas of a metaphor or a theme to tie your course together, think of a short movie scene that might work to describe it.
Search for the movie in YouTube and find the web address for a video that might contain the scene. Then make a GIF of it using the same technique as in the Many GIFs from One Western make. Use the Decorate features to add a caption that can add some meaning (or intrigue) to the GIF,
In the example for this Make, a course is built around artifacts in a museum that “come alive” at night like Night at the Museum.
Example for "GIF Your Course Tying Metaphor":