Soybean-based inks are gaining favor as a renewable alternative to harsh and toxic petrochemical inks. White Office Paper One of the highest grades of paper is white office paper. Acceptable are clean white sheets from the likes of laser printers and copy machines. Colored, contaminated, or lower grade paper is not acceptable. The wrappers the paper comes in are of lower grade, and not acceptable.
Staples are ok.
White office paper may be downgraded, and recycled with mixed paper. In areas that don't take cardboard from consumers, one can often drop boxes off at a supermarket or other high volume business. Contaminated cardboard, like greasy pizza boxes, is not acceptable. Newspapers Newspaper is widely available and of uniform consistency, which makes it valuable. The entire newspaper including inserts acceptable, except for things like plastic, product samples and rubber bands.