Here's another pair of little beasties to add to the growing menagerie. My drawing materials are simple: an HB or 2B pencil, a section of newspaper, a q-tip, and a kneaded eraser. The most important aspect of creating a tight pencil rendering is how the pencil is held. That makes a huge difference.
My greatest pencil rendering influence is Midge Quenell, the graphite rendering instructor at the Art Center College of Design in Los Angeles, where I attended art school.