In Finland we fly around the year, no matter how cold is there. With transmitter mitt you can fly in -10C frost easily. But when the temperature goes below -20C, there have to be some additional heater. And there is wonderful invention from RC-Thoughts - Warm TX heater!
Sadly there was no appropriate mount for it. So drew this in one night and here it is. Enjoy!
Print the base box with some hard filament as pla, abs, nylon, what ever you want. But the heating pads in hard TPU like 98A.
Clipping swivel mount is designed for 5mm handle/support.