This remixed cable spool with attachments for suction cups is meant to complement suction cup based Starlink Mini mounts for vehicles that are widely available on Amazon. It is for vehicles with glass/moon roofs only.
Given in vehicle scenario likely means the use of Starlink's 5m USB C to Barrel cable, this mod helps to keep the unused length of the cable neatly coiled up. A cable hook is also added to each side of the spool to help sure the exiting cable.
I'm using 50mm suction cups from Amazon (https://a.co/d/5zsHQV3). You can acquire similar and modify accordingly.
So far this was worked well in a test drive on normal paved roads. If you are using for off-road, some modifications may be necessary for stronger suction cups so YMMV.
The author remixed this model.
Added mount points x 3 suction cups for in vehicle use.