Using my -very- limited tinkercad knowledge I remixed QuackingPlums' excellent ForTwo cupholder so it would fit in my Roadster (452).
It's slightly tilted backwards so bottles don't hit the buttons or generally get in the way.
The curve on the back isn't perfect, but the velcro strips I used made it fit ok, might do some proper measurements for v4 instead of just eyeballing it. :p
v4 would also not have the hole in the back, let's call it ventilation? whistles
Hit it with some gunmetal gray plasti-dip, need to find something that matches the interior better.
First thing publised, go easy on me :D
Clas Ohlson PLA