Asynchronous "unplugged" Course B Lesson Events

My students have worked hard to complete Course B throughout the year. We just had fun “creating” an app that would be just right for Anton Alien and sharing them in Flipgrid! But I’m stuck on the next unplugged lesson to introduce the idea of coding events. This was actually a pretty tough concept last year when we were face-to-face in the classroom, and I’m struggling to create an activity students can do to develop their understanding of the concept. Help!