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Electricsheep
From dankwiki
Yes, it still runs as of 2022, on both amd64 and aarch64 (I have it running on a Raspberry Pi).
In xscreensaver
Edit $HOME/.xscreensaver (if no such file exists, generate it by running xscreensaver-demo). Add the path to the electricsheep binary to the list, terminated by the literal sequence "\n\", i.e.:
/usr/local/bin/electricsheep \n\