Anything is subject for a poem :
A catalog of boxing equipment, a collage of other poems,
Serpentine trail of incense, raised deer fur, old shoes pointed pigeon-toed,
Glass and steel cityscape, almond eyes of a saint, weeping tiny flowers,
Sunlight on whitewashed walls, blue shadows of stooped women,
A spring mousetrap, a trickle of blood in the gutter,
The homing swoop of a gull, chill whitecapped bay, scent of eucalyptus.
Green lawn of broken blades, clods of fat earth.
Anything is subject for a poem.

Even in sleep, write a poem.
When waking, write a poem.
While loving, write a poem.
Even voting, write a poem.
When angry, write a poem.
While dreaming, write a poem.

The sages say quite seriously that those who wish to know better should cultivate the poet in themselves.