I love working with cardboard. Tear it, distress it, etc... Mostly make covers for my BIA books from it.
It takes A LOT of time and tearing to reveal the corrugated part. Especially on bigger projects. If you do it, you know what I'm talking about... Ugh!
Anyways, one day I realized that my bunny basically is doing exactly what I am, when he gets a piece of cardboard...
Now I have several larger pieces that I can use and cut to size. And... he did all of the work.
Now I can say, when he is tugging my sock in a kitchen demanding his carrot, that he definitely has earned it.