Try something new this year and try this scavenger hunt. Excerpt:
After posting my Google Doc Scavenger Hunt activity, I had several teachers ask if I had created scavenger hunts for any of the other Google tools. Below is the scavenger hunt I designed for Google Slides.
Teachers are welcome to access and use this Google Slide Scavenger Hunt. Just click “File” on the presentation and “Make a copy.” It will automatically save to your Google Drive, then you can edit your version so it works for your students
Find it here at http://catlintucker.com/2017/08/google-slide-scavenger-hunt/