From time to time, I get the urge to experiment with artificial lighting, but then I take a gander at the cost of studio lights and retreat back into my world of natural illumination and built-in flash photography. "Clockdoc," though, over at the the Digital Photography School forum, has some engaging stills he shot with, of all things, a single LED penlight. "I posted this to encourage you to try out different 'everyday' light sources you find around the house and to show that you don't need a $300 strobe to do creative lighting," he writes. After looking at his lighting experiments, they certainly have me ruminating about creative ways to tinker with ordinary artificial lighting sources.