I rather fancied the grey hemispheres that were seen on the shuttlecraft control panels early in the show. The characters used them as flight controls, placing their hand over a hemisphere much like they'd grip a joystick.
A three-dimensional surface that's still as sensitive as the flat control panels and possibly moves like a trackball would offers a lot of potential for controlling a spacecraft with one hand...
Inset version, "Coming of Age":
Without the covering hand, "Unnatural Selection":
Still there, but Wesley knows how to fly hands off, "Samaritan Snare":
Later on, the inset was covered up and an all-flat panel began featuring the classic "cursor keys" graphics.