Linux distributions which run as screensavers for Microsoft Windows, updated for Debian Trixie. https://youtu.be/2PJBEHrcQr0?si=LTzOe7Y_vAUxEC9H is a video of the boot process. https://github.com/tjcw/screensavers has tools for making your own screensavers and https://github.com/tjcw/screensaver-docs has instructions for how to replace the Debian logo with your own logo.
To use these files, extract the zipfiles on a Microsoft Windows system and run the setup 'exe's . Then you will have 4 extra screensavers, fr2, fr2n, gk2, and gk2n . fr are the educational ones and gk are the games ones. The n suffixed ones do not have network access (yes you can run firefox in your screensaver !)