In this image, I used my iPhone to photograph and process the shadows of a Venetian blind projected by the late afternoon sun onto the linen curtains in my office. Note the shadow of the rectangular pole (used to open and close the slats) in the lower right, and the regular pattern of darker shadow at the apex of the curve made by the positioning of the curtains.

While it is great to travel with my camera, I believe—and I like to teach—that it is perfectly possible to be creative wherever you are, and that sometimes home is best.