That's right... You heard right...
The Byronic Cyberphonic Shiftomatic(Not available in the Shops).
Actually - it's just a a couple of bits of wood.
Thing is, I wanted my shifter to be at my side rather than up next to my wheel, but I didn't want to be bolting unsightly bits of wood to my desk.
I got a bit of 1x1 and some MDF that I had left over from fitting my bathroom, and I went at 'em with a jigsaw and a drill.
So... the long bit clamps under both of the wheel's desk clamps (having removed those big plastic spacers) and the shifter clamps onto the flat bit. When I pack my wheel away, it packs away too.
Job done.

