Bed Mats

We have a 9 month old JRT who is now going on her 5th bed. We started off with just a cheap foam bed that she ripped apart within a few days. We've continually tried new types of beds to put in her crate, but she continues to chew them apart. Just recently we bought a really durable pillow that had a corduroy-type shell, and amazingly it didn't even last 1 day. We of course keep a couple chews and toys in her crate to play with, but it seems like the bed is her favorite chew toy. She was done teething a few months ago so I don't know what else to do. I know there has to be something more durable that is made for other breeds of dogs that can do more damage chewing than a JRT. Does anyone have a suggestion on a bed/lining they use for their JRT?