This sites "logo" is an interactive, animated, pixelated rotating cube.
I like that the style of my website leans into browser defaults. But one problem I've had with it is that some people could assume that I don't know how to, or am not interested in doing fancy things on webpages. Nothing could be further from the truth! So I set out to make a small icon for my header that would fit my style while also communicating that I do a lot more than plain html.
At first glance it could just be a GIF, but hovering it reveals that it's being rendered in real time, and clicking it does even more.