Who needs a paper shredder when you have a dog?
Instead of always locking Loki up in the exercise pen when we are gone, I've been slowly moving towards leaving him alone with free reign of the apartment when we are gone. I leave him alone for up to 1.5 hrs. with free reign.
Today, I was only gone for half an hour. When I came home, he brought the shredded advertisement to me. He seemed so proud. It's hard to teach him otherwise, because he's not normally destructive when we are home.