Google "Add-Ons"
Enhancing Google Presentations with Google Add-Ons
Two great add-ons...Unsplash and Icons
Google Slides just got better with these new add-ons. Simply go to the menu, select "add-ons", pick the "add-on" you want, and start using. These will help enhance your presentations!
https://youtu.be/3JYHPoZZILw