I've recently seen doggy basket type beds made of hard wearing plastic.You just throw a blanket inside. Don't know if they're really chew proof though. My girls sleep on the lounge and somehow wake up on our bedlol so their beds are now used for storing toys. Lola has a huge floor cushion she loves to lay on. I'm very lucky because she does not chew.
If I see the plastic basket again i'll take note of the brand and let you know.
PS. Hey remember when your dogs were barking at night? Maybe it's at your mean step dad...he he.