For some recycling ideas, TerraCycle has a variety of recycling programs for common school supply waste streams. Empty pens and markers, for example, can be recycled through the Writing Instrument Recycling Program. In partnership with Newell Brands (makers of Sharpie, Papermate, Uniball), TerraCycle can collect any brand of common writing instrument and recycle them into new products, like park benches and playgrounds for schools.