What can i use to put in my dog's crate for her bedding that she won't chew to shreds?

We have used old bed comforters and even bought her a dog bed from Sam’s that had a canvas like material cover. All chewed to shreds!! I have heard things like hay or hampster bedding but don’t want it all over the kitchen floor which is where we keep her crate. The dog is a 11 month old American Bulldog.

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