I made some Whitewash City buildings at half scale (no scale per se, just printed two sheets per page), made a nice little western town in no time!
I also took some Woodland Scenics small tree armatures, cut off most of the branches, bent the rest at right angles to the trunk, then straight up parallel, painted green with a light drybrush, and had Saguaros. Glued them to 1 1/2" washers.
SteveN