Vignettes are small visual items of secondary interest, as part of the larger scene...something not very important.
I call them "yawnettes".
Rip Track
That's clever, Rip Track. You coined an immediately understood term and brought a smile to my face. And yet, when I saw shots you have posted of your layout, there was no yawning. Instead, I admired your individuality. Also, you said (if I recall correctly) that your layout modeled an area like where you live presently. I've never been to such an arid place, so I surely couldn't model it, having no idea what I'd be "talking" about. I'd have to take your word for it, which I do, of course. But "yawn, no, because I try not to do so when I am being educated about something not known to me.
In fact, I have not ever found myself "yawning" in anybody's direction anywhere on this entire forum since I take all the peeks we are granted, from time to time, into a fellow hobbbyist's imagination and enjoyment of life to be enjoyable, not once boring (as yawning can imply.) Maybe, there's a noteworthy difference between you and me we have just discovered. Good. Variety is the spice-of-life, I believe. And I can see you are having fun, with your layout and here.
Rip,
I too have never been in an arid place, but I like your scenes. From what I see, your philosophy is "Less is more" I think what you are doing is great! Thanks for sharing.