16 Paper and cardboard; writing paper; laser printable paper, reusable laser printable paper; notebooks, namely, specialized paper notebooks for use with a separate mobile application for uploading notes to the cloud; notebooks without notes, namely, blank paper notebooks; notebooks without notes, namely, blank paper notebooks with printed two dimensional bar code; reusable paper notebooks; erasable paper notebooks; spiral-bound notebooks; hardcover paper notebooks; lab paper notebook; modular paper notebook; paper index cards, blank note cards, adhesive notes, namely, adhesive note paper, blank note pads, legal note pads, desk pads, sketch pads, easel pads, printed agendas, printed calendars, printed day planners, writing and drawing books, sketch books; whiteboards, namely, dry erase writing boards; loose-leaf binders; notebook page dividers; separator sheets, namely, notebook dividers; writing instruments, namely, ballpoint pens, roller gel pens, fountain pens, correction pens, erasable pens, writing inks; ballpoint ink pen refill cartridges, pen ink cartridge refills; felt-tip pens; drawing instruments and their refills; drawing pens; drawing ink; crayons; pencils; color pencils; permanent markers; highlighting markers, felt-tip markers; chalk