
Whilst shopping recently I saw a new set with an unusual part. The part was essentially 2 motors in one with a receiver. The motors were controlled by a Pf remote control. One motor was a regular motor and the other was used as a turning unit.
I think it would be possible to use the main motor to act as a pump whilst the other was used to active a pneumatic switch. Combined with the NXT and IRLink sensor this could be very useful!