Inflatable Dog Bed by SnoozAIR
they have an inflatable dog bed that they say is claw proof but they don't say anything about chewproof! it is pretty big from the looks of it.
PVC Custom Made Dog Beds
this is a dog bed made out of pvc with a hammock like matterial braided for the bed. it is actually kinda cute and comes in colors (so it says, i didn't look at those pages) and is only @25 plus shipping
I also know there is a Kurunda bed, I think that is how to spell it. It is a hammock like bed also, not for sure of the price or anything.
Hope these help you!