I saw a cool fidget cube some years ago that was made of interlocking gears. I thought; “that’s cool and all…
but you know what’s cooler than cubes? Skulls!”
So I found what I think is a ct-scan of a skull, did a bit of cleanup on it and intersected it with my model of the gear cube toy.
I’m not sure who made the original gear cube, but there’s a link to one below. I’m not sure who's skull it is either, but I’m eternally grateful to the internet.