It’s no Gomboc, but the boy produced this earlier today using a maths renderer.

The function is f(x,y) = (πx3)×y
He also thinks you all should know about Acid2, which test your browser to see if it is latest-standards compliant.
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Eeep! My understanding of calculus never went beyond two dimensions!
*brain hurts*
*is very impressed with your boy*
I think he was mostly just plugging in any old maths expression he could think of and seeing what picture came up, but at least it’s got his curiosity going.