I've used a form of imagined flying, ie: before takeoff, the student and I will go through verbal commands such as "right aileron", "left rudder", "half throttle", "up elevator", etc while moving the buddy box sticks. This establishes a very standard form of communication between myself and the student, and gets them used to the sticks-- because I will not allow them to look at the radio while flying. It helps, especially after the 5th or 6th flight. The instructions begin to be followed instantly.