There’s an amazing collection of Apple device (iOS) and computer (MacOS) you can use on PowerPoint slides or a Windows desktop.
‘nucleam’ put the collection up on Google Photos. They range from the most recent for iPhone back to the early days of iOS 3.
Some are famous images, a Da Vinci here, a Seurat there. Others are lovely photos or nice designs. Some short videos are also available.
For the MacOS they go back to System 7 and MacOS 9.
How to get the Apple Wallpapers
iOS https://goo.gl/photos/ZVpabTtcezd35XBa9
macOS https://goo.gl/photos/HjY1hmo6p3jfFz8a7
All the images are high-resolution JPG files, compatible with PowerPoint and Windows.
Click on any thumbnail to see a full size version.
To download the full image, at top right click the ‘three dots’ menu icon then choose Download.