concertinapieces is a psychology student who makes wonderful crochet neurons that you can buy over the interwebs, although she warns that “your neuron may vary slightly in dendritic branches as no two are alike :)”
Her online shop has motor, bipolar and hippocampal pyramidal neurons that you can use to begin creating your reanimated textile zombie brain.
Actually, I quite fancy the idea of a crochet Purkinje neuron but I suspect it would need so much wool you’d need a truck to deliver it.
Might make for a great duvet though.
Mind Hacks 