I created a few fun stuff in CSS like 6 years ago:

https://codepen.io/Eliteware/pen/PqKgmg https://codepen.io/Eliteware/pen/ZYBQNq https://codepen.io/Eliteware/pen/aLxGQy https://codepen.io/Eliteware/pen/ZGdrEj https://codepen.io/Eliteware/pen/aOxrOz