Fair Use is tricky, people tend to think it’s a law or a rule with some magic formula for what you can do with content. It’s really a provision (in some countries) you can use to justify your use of something not openly licensed. It’s up to a judge’s discretion to decide.

If students use open-licensed content, and attribute as specified, then they do not have to make a case for fair use.

I like and will be using this Mozilla Teaching Kit activity, the Fair Use Free For All
https://chadsansing.github.io/curriculum-testing/curriculum-migration/web-lit-basics-two-migrated/session05-fair-use-free-for-all.html#overview

You don’t have to use the Thimble thing, students just find an image that is open licensed, one that the can make a case for using under fair use, and one totally copyrighted. Then their partner has to try and guess which one is which.

And not to toot my horn, but I made one for Mozilla called “Image Seeking for Fantastic Metaphors” https://thimbleprojects.org/cogdog/89380/ The concept is finding photos of specific objects (e.g an elephant, a balloon) is easy to do wit descriptive keywords, but less literal concepts ideas (e.g. honesty, fairness, pain) require a different strategy. Again, the thimble I made is way too complex, but the questions I use can be used in other ways as an activity.