What is artists tool in shape of tightly rolled sheet paper?

A tightly rolled sheet of paper used by artists is likely a roll of drawing paper or sketchbook paper.

Here's why:

* Drawing paper comes in rolls for ease of use and storage, especially for larger pieces.

* Sketchbook paper is often sold in spiral-bound books, but some brands also offer it in roll form.

Other possibilities:

* Tracing paper: While not typically rolled tightly, it can be rolled for storage.

* Charcoal paper: Also available in rolls, especially for larger drawings.

Let me know if you have more details about the artist's tool or the context, and I can give you a more specific answer!