Can you find a downloadable clip art that depicts what you want?

If so, download it and save it to your desktop, or to a folder you are familier with.

Open or create the slide show you want to put it into, and create a new slide. From Home / Layout, choose any of the Picture or Content Layouts that suits your needs.

In the content area, click on the Clip Art icon (4 small boxes), and browse until you find the clip art that you saved, and click on it to import it into your slide.

HTH
Gary