That would restrict you to 52 stations, though, which seems too few. Though I like the vaguely rhyming sound of those.

And I quite like dice-rolling. Even if/especially if it got us weird looks on the tube.

Then again, if everyone's doing it separately but at the same time, nothing wrong with people choosing their own randomising method. You could write a script to run on a PDA which would choose a station at random...