I currently have a Cliq and (generally) love it.
There is one thing that I think would be really slick, though:
A LASER.
No just low powered
. Modulatable and detectable. That way it could be used for: Sending and/or receiving data; It could also be used (in conjunction with the level) as a laser level; It could also be used as a pointer (duh); possible a TV remote (if it contained both a visible AND IR laser); It could possibly be used as a distance measuring device (LADAR); etc.
Another Android solution in search of problems.