I would say a psi wheel would be the place to start:
http://www.psiwheel.com/
Placed inside a glass housing this would have several advantages over the equipment described, as well as being a lot simpler.
Obviously if you sit very close to the thing, and move your hand a lot, there may be electrostatic or thermal problems to consider. However if you could get the wheel to move from a greater distance, and impose your will to make it go in a chosen direction, then that could open up some serious experiments.
The trouble is, I suspect, that it is difficult to summon up the will to practice at this for long.
David