However it can also contain a variety of other stationery such as sharpeners, pens, glue sticks, erasers, scissors and rulers. They are intended for easy portability of small item such as pencils and pens. The Perfect companion for your Traveler's Notebook or Planner. They can even be used as make up bags.
There are many shapes and forms for pencil cases, some just for 1 pen and others for entire collections. They come as round pouches, with or without zippers and as quiver shapes.