Because they are essentially looping videos, GIFs are useful for teaching. These are often called Educational GIFs and Explainer GIFs. You might find useful examples for your classes in these resources.
You can also use GIFs and Memes to solicit classroom feedback. As the “vernacular of the internet,” often students enjoy giving immediate, casual, and funny feedback in this format. Brenna used to ask students to give course feedback in memes GIFs, but you can also allow students to share memes as part of weekly check-ins or engagement.