Upload a video and discuss it online (video + dialogue = vialogue).
Here’s one teacher explaining how she uses it (and I love it when she says “Whoopsie-daisy!” at 3:30):
And here’s an example of a Vialogue, by a young woman who appears to be about the same age as most of my students, talking about how she studies Japanese:
And here’s an example of how one video could be used as a kind of listening/comprehension quiz:
You do have to create an account with EdLab to use Vialogues, but it’s free, and it enables you to access several other learning applications.