Harley used to shred puppy pads and newspaper, but he stopped... however,
The other day I caught him chewing on a new penny roll, and then I found cardboard in his room, so I grabbed a few pieces, and somehow, it turned out to be a gift certificate
I found the pieces, I've yet to try and bring it in to use it, but there are a few chunks missing, hopefully they'll let me still use it.