There have been quite a few options suggested for where to mout a radio handset / microphone in the Grenadier, and I apologise to whomever I plagiarised this idea from… but it works well. And no new screw holes! I used a small offcut of aluminium/PVC composite sheet, trimmed to shape, and used the mounting holes that surround one of the heated seat switches (rarely used in Queensland, Australia). Just needed some longer screws, and some rubber grommets as spacers, and there you go. Works perfeectly, and out of the way of all important switchgear.
Another small piece of composite, attached to the back of the RAM mount I use for a tablet, and I had somewhere to mount the headset for my VHF as well:
