Has anyone with Wireless Wire Cube wall mount their installation? If yes, how did you do it?

I used different solutions in the past...

Solution 1: Custom Adapter
We build for a customer a custom Holder based on the Mikrotik QMP
https://mikrotik.com/product/QMP-LHG

I you don`t have the tools or Workshop to jerry-rig you own Adapter.
Maybe the Mikrotik QMP can be easily modified for the WireCube
** Never owned a QMP-Adapter, so no garanties =)

Solution 2: Satellite dish mount
You can usually buy for ~ 20$ Wall-Mounts for sateliite dishes

Solution 3: Ubiquiti Mount
Ubiquiti sells a Wall-Mount(very similar to a satellite dish mount) for around ~20$
Productmodell: UB-AM

Never had any Wireless Wire Cube, but I expect QMP to be OK?
With QMP you get both the mounting clip for SXT/DISCLite series and a small pole adapter. Use the pole adapter.
https://i.mt.lv/cdn/rb_images/1445_hi_res.png
QM and QME are next step in size.
I use the already suggested UB-AM for bigger antennas, like Dynadish.

Ok, just received the Mikrotik quickMOUNT extra thing, and it works perfectly.