If you have bunnies, you are always on the lookout to score some good cardboard. It has totally changed the way I select boxes at Costco.
When we got a new rug for the bunnies' pen, there was a cardboard tube in the center - bonus! We would have paid extra for it. It's basically a 7 foot heavy-duty paper towel tube. The bunnies love it. Here, Ethel demonstrates...
Also added to the Rabbit Ramblings YouTube channel.