I was looking through Ancient Egyptian Jewelry and stumbled on a photo of the mummy of Katebet (BM EA 6665). Her mask and pectoral cover include her hands (made of wood). Some of the fingers are broken off. If you go take a look at her photo on the British Museum website you can see that she is totally (almost) rocking some devil-horns.
This makes perfect sense, as she was a Chantress of Amun. I bet she got crazy with the sistrum and was all dunn nuh nuh nuh nuh dunnnnuhnuh, Amun is the best! Woo!
Tom has suggested she be renamed "Metal-amun" so start your letter-writing campaign to the British Museum now. I'm sure they love getting crazy emails from random people - I know I did when I worked for a museum. They may even have a Greatest Hits file.