We received one of these Ceramic Ginger Graters ($5.95, Amazon) from a friend as a gift a couple years ago, and at the time we were a little skeptical. It looked like one of the one-use tools we avoid.
Now, however, we love it. Whenever we need just a little something grated we reach for this first; in fact, it never goes in a drawer but hangs on a little hook on the backsplash.
The grater has little ceramic nubs on it, instead of holes. When you grate ginger it quickly grabs the pulp and the juice, leaving the tough fibers behind on its washboard front. It is fantastic for grating all sorts of other things too; it grates hard cheese into snow flurries of fine flakes, and it's perfect for fresh nutmeg and cinnamon. When we want just a little to finish a dish or top our oatmeal we always reach for this.