@b0rk most starters like things like #tmux - #bash-insulter (its fun) and #cmatrix and the obvious
telnet towel.blinkenlights.nl
and for people which go the extra mile, either #adb with #scrcpy for android fun or the limitless options of #yt-dlp
(spice up your music collection with some yt-dlp -x <LINK>
or choose smaller / bigger quality with yt-dlp -F <LINK> ... so much more fun tha any limited and fastly outdatet gui/addon)