I wanted to have a stable mount in my Jeep for my HT. So I found a seller on ebay that makes mounts for UV5R sized HTs. Add to that a RAM Mount 1 inch ball and goose neck laptop mount and it makes for a fairly easy project. Except for those pesky Jeep seat bolts (Mortorq) that require a special tool to loosen up.

2/20/2020 Update: This mount also works with my AnyTone 878UV

UV5R mount with RAM 1 inch ball
UV5R mount with RAM 1 inch ball
After mounting the goose neck laptop mount and adapter to passenger seat bolt.

Parts list:

$10.99 UV5R mounting bracket
https://ebay.us/TDM6cC
$7.99 Ram 1-Inch ball mount
https://www.amazon.com/gp/product/B0059X0YIQ
$33.99 Ram laptop mount
https://www.amazon.com/gp/product/B006ZOW1U2
$19.98 Lisle 82400 5 Piece Mortorq Bit Set
https://www.amazon.com/gp/product/B016QB9OLM