Free Picture Finder is a PowerPoint, and Word, add-in that searches for royalty free pictures on Flickr. To install, open PowerPoint, go to INSERT > STORE > search for “Free Picture Finder” > click ADD.
It’s simple to use. After installed, go to INSERT > MY ADD-INS > click the drop down menu and click on FREE PICTURE FINDER. The app action pane will open on the right. Just type a keyword in the search bar and images will populate. Click any thumbnail image and it is automatically placed on the current slide.
The images are all royalty free and can be used however you’d like, but the only caveat is that the image size is capped at 250px in height or width. Here is a sample layout of images added and then PowerPoint styling applied: