Blackboards, drawing boards and easels; Chalk and blackboards; Collators for office use; Document files; Holders for printed notepads; Office requisites, namely, envelope sealing machines; Paint boxes for use in schools and brushes sold as a unit; Painting tablets; Pen and pencil cases and boxes; Pen holders; Protective covers for books; Stands for pens; Stationery cases; Watercolor pictures; Writing utensils