My letter writing is a theatrical piece. My desk lamp is a member of the tech crew, standing at the side while the pen, cardstock and I perform.
The desk lamp dreams of a pen with light for ink. The letter is a nightlight for a kid who's afraid of the dark. The kid keeps it in a box that softly glows at the foot of their bed, keeping night creatures at bay.
There is paper made from sheets of light. The ink is the shadow of the pen.
Shadows need to write as well, and when they write on sheets of light, they touch the paper and write with darkness.