In japan you don't shred old documents. you make pens out of them
Believe it or not, some offices still use pencils and paper to communicate. Those that do often find that they have an abundance of waste paper and a lack of usable pencils. This brilliant solution takes care of both problems at once by using waste paper to create brand spanking new pencils. It’s called the P&P Office Waste Paper Processor, and it’s designed to provide low-cost writing implements from office waste.