Using their Chromebooks and the app "Clipchamp", students can take video of, for example, a routine they have put together. The video can, then, be turned in to the Google Classroom assignment you have created by uploading the video (either directly or from Drive). This allows you to evaluate what they've done out of class, rather than during class, which can be a huge time-saver.
Another idea would be to take a video of a student performing a skill, then practice the skill, and then post test using the video again. The student can then see their performances and compare them themselves.