A while back (wow, over a year actually) I made a little crocheted ball representing hyperbolicity. Well, there's another geometrical/mathematical pattern out there: A pattern for a crocheted dodecahedron (in English and, I assume, Dutch).

Maybe my hyperbolic ball needs a "friend"? (It also looks a little bit like a katamari ball (for which there is also a free pattern (but don't attach your credit cards to it if you make it magnetic))

I'm not quite sure where I set my little hyperbolic ball. It's probably on one of the bookshelves somewhere.