Investigator Ura Daniels recommends this DigInfo News report:
At Eco-Products 2009, Oriental Co., Ltd. exhibited a revolutionary recycling machine called White Goat, which makes toilet paper from shredded paper. White Goat also has a shredding machine in it…. The dry paper is wound into finished toilet rolls, which emerge from the outlet one at a time.
Google Trends indicates that, in at least one way, comparative demand for toilet paper (blue below) has consistently outstripped demand for office paper (red below):
