You will need a wiffle ball or other soft ball. Have your training partner toss the ball up softly in front of you. From a good, fundamentally sound batting stance, try to hit the ball with the knob of your bat. Take the knob of the bat directly at the ball and just tap it. Be sure to incorporate your lower body action into the drill. Repeat until you are proficient and are using smooth, rhythmic motions to the ball.
If you have a small enough bat available, you can progress in this drill to one-handed soft toss. Alternating your top hand drill and bottom hand drill, discussed above, while incorporating the action of striking a softly tossed ball into the drill. This is an excellent training method and will develop tremendously active hands through the hitting zone as well as improve your hand-eye coordination. The result will be pure striking of the ball at the optimum point of impact. Something every hitter strives for.