Take a look at this Rolling Knife Sharpener from Work Sharp. It includes a magnetic knife stand with rubberized feet, the Rolling Knife Sharpener, and three magnetic disk hones: coarse diamond, medium diamond, and fine ceramic. To sharpen your knife, select your angle and attach the blade of your knife to that side of the stand. Then, run the roller along the edge, progressing from the coarse hone to the fine one. Switch to the other side, sharpen it, and voila! Your knife is ready to work.
Work Sharp offers many excellent knife-sharpening tools. Check out what it has to offer!