Flexible mini-tripod (about $22 to $55)
For photo-savvy friends who always carry their digital cameras, a flexible mini-tripod such as the Joby Gorillapod could be a good stocking-stuffer. The Joby has bendy legs that can attach to anything from tree branches to fences, to help you take group photos or shoot in low-light conditions without a flash. They are available for point-and-shoot as well as SLR cameras, and come in fun colors.
Joby GP3 Gorillapod SLR-Zoom Flexible Tripod for Digital SLR Cameras