Both current stage of development and accuracy of "mind reading" technology and the price of equipment used on ISS would prevent this from happening. That, combined with high cost of failure (possible damage to life-supporting systems), make me believe that such a system would be infeasible.

On the other hand, NASA experimented with volleyball-sized self-propelled semi-autonomous robots, called Personal Satellite Assistants. More on the program here, but no info about what happened to the prototypes: http://psa.arc.nasa.gov/