Other accessories are devised for filing and safe storage of bound documents. The UniFile clasps enable to store the documents in traditional hanging file drawers. The SteelClass clasps are meant for filing documents in a DuoBinder without punching the documents. Both the UniFile and the SteelClass are made of a strong and flexible material and are reusable. The UniClass self-adhesive perforated strips play the same role as the SteelClass clasps.