This might be the most niche remix in a while. Took the great design that Einstakur3D created for the Tesla Model 3 and edited the internal slim can version to securely hold a Meshtastic radio that's in a case designed by TonyG.

I also added hexagon holes in a mesh but arguably the original looks cleaner so print one of those outer larger ones from the original design by Einstakur3D if they're not really to your taste. 

Original design for the cup holder is here:

https://makerworld.com/en/models/23536?from=search#profileId-21065

Meshtastic radio case is here:

https://www.printables.com/model/118750-heltec-lora-32-case-for-meshtastic

It's one of theonly cases I've found where it can comfortably hold a 3000mAh battery.