16 Paper; paper articles, namely, paper art pads, artists' sketch pads, [ paper palettes for painting, ] artists' paper blocks for sketching, drawing, painting or writing; notepaper pads, blocks of blank paper, paper drawing boards and paper painting boards; cardboard; [ cardboard articles, namely, cardboard packaging, cardboard boxes, cardboard containers, paperboard cardboard, cardboard picture mounts, advertising signs and signboards of cardboard, display banners of cardboard; ] artists' canvas; artists' canvas boards; canvas stretcher bars for artists; parts and fittings for canvas stretcher bars; plastic tensioning devices for canvas stretcher boards; [ drawing boards; painting boards; crayons; pastels; erasers; pencil sharpeners; writing implements, writing instruments; ] writing materials, namely, writing paper, writing pads, writing brushes; drawing materials, namely, drawing quills, calligraphy brushes [ , calligraphy pens ] ; [ pencils; pens; charcoal; markers; sets of markers; chalks; ] paint brushes; artists' brushes; [ artists' painting palettes; ] artists' watercolor saucers; [ artists' easels; paint boxes; painting sets for children; stationery; ] printed matter, namely, books, leaflets, brochures, guides, manuals, charts, [ diagrams in the field of art, artists' materials, artistic techniques and art education ] ; [ printed instructional and teaching materials in the field of art, artists' materials, artistic techniques and art education; adhesives for stationery purposes; ] modeling compounds, modeling clay and modeling paste [ ; ink; Indian ink; writing ink; drawing ink; calligraphy ink; ink sticks; colour sticks, namely, stick markers holding paints ]