Starting with PPT 2021 there are more possibilities to use illustrations, icons. These are included in the new Picture button on the ribbon. Click Insert - Picture - and choose the new item Stock pictures.
Now you can choose from a few categories: images, icons, callout people, stickers, videos, illustrations and cartoon people. All of the options are further devided into several subcategories.
The images are free for use in PPT.
There is an expanded set of icons. You can also still get at them using Insert - Icons on the Insert tab.
The
cutout people tab contains png images of people. They all have a transparent background.
The stickers tab is completely new and contains some funny cartoon like pictures. Not to use in a professional environment though.
The video tab is new also. These are small videos which loop until stopped.
The illustrations tab contains illustrations in grey scale with a yellow popup. The yellow popup can have another colour, select the illustration click on the Graphics format tab and choose Graphic fill, then choose your new fill. See the example below:
Illustrations are svg files which means they are defined by an equation. You can change these by converting them to a PPT object. Illustrations have the same behaviour as icons to change them see my article: Use and change icons in PPT
Svg stands for Scalable Vector Graphics. These are high quality images that can be scaled to any size without losing quality. No pixelation whatsoever. On top of that they are much smaller in size.
Finally the last category is cartoon people. In this category you can assemble your own cartoon character. Below is an example: