I created the Linux Tux in pure CSS and ond DIV only

This penguin is created with only one DIV and solely CSS (no images, no tricks, only CSS):

This is an ongoing series I started some time ago. You can check out the code here:
https://codepen.io/thadeuszlay/pen/QEpXEa

I'm looking for inspiration. If you have suggestions what I can create next, then leave a line.

Happy coding!