Wall-Mounts for the Brume/Creta/Slate form factors would be good - alternately I suppose strong hook/loop tape (aka Velcro ™) might work for them, as well as Mango/Shadow/White.

For my side project - we turn ar150 upside down, using the “tophat”, e.g. upper case to fasten to the box, rather than the “skateboard” bottom lid - the box being a weatherproof Pelican case along with a 4G LTE modem card and ethernet.