Easiest, fastest, cheapest method!!: attach a string to the end of the marker (taping a knotted string works pretty well), spin the marker over your head several times. Centrifugal force will move any remaining ink to the marker tip. Make sure the cap is on though!! And be careful removing the cap, do it over a sink or wad of paper towels because sometimes a lot of ink can pool up in the cap. I'm a math teacher at a low income high school and we are always looking to save money in our department! ... View related article.