I absolutely love this project, almost as I love the blog that it comes from. Have you ever wondered what to do with toilet paper and paper towel rolls? Because that is what TP Craft is all about. It is literally a blog of TP roll crafts. And you would never believe the amount of things that you can do with those little brown tubes. But this one is my absolute favorite. Make a marble run for your kids! This is the perfect thing to combat cabin fever in these last few weeks of winter. See how she did it at TP Craft.