Have you ever had a dog that ate everything in site?

I am talking non-food things like bath loofahs, underwear, and pillows. If so how did you get them to stop? I am dog sitting my brothers dog for the weekend and and he eats everything. He and his wife think it is cute when he eats a bag of cotton balls and poops out yarn but I feel they are going to be very sad when the dog eats the wrong thing and dies. He is a puggle, which is a mutt that is half beagle and half pug that they call a designer dog and paid an outrageous price for and I think it received the worst qualities of both breeds. They just had a new baby so don’t have much time to work on training him so I need advice for things that I can do in a couple days to get him started. He doesn’t just chew but eats the stuff. the vet didn’t help and neither did the apple spray. He seems to like it. Any advice?