I have recently bought a Nest thermostat (v3), i was not happy paying £30 for the stand.
This will probably work with all versions of the nest thermostat, but i have only tested it with the version 3.
Please feel free to download this object, and report back if it works with other versions.
.35mm first layer .2mm for the rest
I printed this object base down, sadly i exported the STL with object on its side. You'll have to rotate before slicing.