Combining traditional drawing with computation?
With an Earthquake Pen this is possible.

When drawing with this pen, it performs lines that inherit the audio wave of any sound present.
This way one can computationally change the way a drawing line appears while performing traditional skills.

How it works:
The control unit has a silicone button that contains a magnet.
With this button the pen can have different wavelengths of shaking.
If the button is not pressed, a microphone records sound and the controller transforms them in to
waves which are drawn by the pen.

The Pen contains a coil and two magnets that are suspended by silicone bumpers.
Through the bumpers’ elasticity and the weight of attached magnets, vibration occurs in the pen that draws waves on paper.