My boyfriend and I do this sometimes. We get two disposable cameras and choose a location. Snap, snap, snap. We discover new things and get closer to details. We think before we push the button because we only have one chance to capture what we see. The result is always a surprise and inevitably appears different from what we remember seeing as we took the photo, sometimes better and sometimes worse. See photos from our last competition in our travel blog, www.oursouthamerica.wordpress.com.