Corsa B/C, Cavalier, Calibra etc etc (easily fit a Nova with a bit of ingenuity) Flip up arm rest type thing. Had it the Bread Van for about 40k miles, sooooo much more comfy on the motorway then having a random arm lying doing nothing :/

High/angle adjustable, leather piece slides forward (useful if your a short ****), top flips up & theres a little cubby hole inside for sat nav etc etc.

£20 delivered to your door.