Clipboards; Stationery; Blackboards, drawing boards and easels; Bookbinding materials; Cutting mats for arts and crafts use; Drafting instruments; Drawing instruments; Folders for papers; Labels of paper or cardboard; Loose-leaf binders; Memo pads; Office hole punchers; Paper clips; Paper hole punches; Paper shredders; Paper trimmers; Seals; Staple removers; Staplers being office requisites; Writing or drawing books