The Nostalgia set of Teams background images includes Office Clippy, the famous Bliss image used for the Windows XP desktop, and images of Paint and Solitaire. These are only part of the wide selection of suitable images to use as background effects in Teams meetings. And if you’ve got a great image to share, you can upload it to the Microsoft Gallery for others to use.
https://office365itpros.com/2021/07/19/nostalgia-set-teams-background-images/
