This is my new best friend.
It’s called a “Bird Kabob" and you can find it at your local pet store or online store. It’s designed to prevent feather-plucking in birds while still satisfying their preening urges. Sound familiar?
I’ve been carrying one around my job (a pet store) and tearing the shit out of them and the sensation is very similar to pulling. I wound up buying one today and bringing it home. It’s a soft shreddable material compacted into links, which are easy to pull apart strand-by-strand.
They’re like 6$ and you can get this one here - http://www.amazon.com/Wesco-Original-Bird-Kabob-Shreddable/dp/B0002FP1W0/ref=sr_1_1?ie=UTF8&qid=1337374890&sr=8-1