I was visiting some websites this morning, when I discoveredemojicursor.app

And I started testing things, who leaded to... this:

Result on xubuntu/firefox:

This is abad idea, since the emojis will render differently depending on your platform and browser (and will not appear at all if you're on smartphone), but it's interesting to know that you can mess up with svgand emojis oncursor property.

And you, have you discovered some strange and/or unknown useless css tricks ?