Yes, I will try this one.I think you mean something like the Gear Keeper.
Is that what you're looking for?
I have no experience with this myself. Have fitted my microphones with magnets and can use them more easily this way.
Same here. But in Germany I have found nothing proper ready to use while in Australia or North America something like these magnetic mic holders seems to be almost standard, right? So I did a little DIY:I second the magnet method, easy to put back in place without taking eyes off the road, and unlike with the retractable leash, the mike does not swing around when off road and drive me nuts.