Preferably chicken bones, but whatever works
In this episode of Craft Lab, hosts Anna Akana and Greg Aronowitz craft a Sonic the Hedgehog statue partially out of chicken bones. It's cut down the middle to show his insides. Eww.
If I went into someone's home and saw one of these on display, I wouldn't expect to leave alive.
Would've been less creepy if they had kept Sonic's legs nice and lanky.