A dongle holder for the Logitech G435 that fits snugly around the shaft of a headphone stand. The shaft is 25mm X 10mm.
The dongle is 17mm wide and 7mm thick.
https://www.tinkercad.com/things/5VSjPyhBonb-logitech-g435-dongle-holder
The author marked this model as their own original creation.