They’re crocheted:

Design by Lucy Ravenscar; pattern downloadable for free from Ravelry.
I will say that “amigurumi” does sound like a Doctor Who monster: “Doctor, look! The amigurumi are coming this way!”
Thanks for Shirley for the heads-up.
(If you stumble across a cool Doctor Who thing, feel free to email me with a link.)



















I thought they were called Extermiknits.
Well done, Hank!
It’s memetic warfare, I tell you! The plushie Cthulhu was only the first step…