Epic?
Aww, you guys are looking in the wrong spot.
Arms and Equipment Guide has a magic item called the sparring dummy of the master. The character has to have at least one level in monk to use it, and they have to spend 8 hours a day for four weeks training on it. In fact, they are allowed one interruption of more than 24 hours though they have to start over. If they are interrupted twice they can never gain the benefit; being able to move 10ft whenever they take a "5ft" step.
Price: 30,000gp
J from Three Haligonians