Doing an unsupported double century (200mi) ride and wanted to bring a larger saddle bag to fit some extra clothes. Sadly the new bag obscured the radar, so I had to get creative.
This mounts to a Pavé D shaped seatpost, extends under a bag and holds a varia radar. You need a cheap Garmin mount insert ($4 on amazon) to fit in the cup.
Fusion360 file also included.
More details here: https://blog.jonasbengtson.se/garmin-varia-seatpost-extender
The author marked this model as their own original creation.