I guess this is a "Land" project! I've had the Minart "Country Road" diorama base for years:

I repurposed the cart (a regular injection kit) for another project. The base and wall are both vacuforms, so the work required to get them ready has been an annoyance. After every step forward I've put the parts back into the box and moved on to other projects. Over the years, I've cut out the wall from the vacuform backing and removed/filled in most of the pips in the thin plastic. A year ago, I glued the wall together, puttied the many gaps and eventually painted everything in black before it went back into the box.
A few months ago, I decided that I want to get better at bases and dioramas, so once again, the country road came back out. This is what I have so far. It's still very much a WIP, but I'm getting closer to something that I'm satisfied with. The "tree trunks" are Ficus branches from the planters in front of our building:

I made the tank tracks a little less obvious with some putty. They could be tractor tracks? I've used static grass, some pre-made grass and bushes and some "clutter" - small brown bits of... something. I also used a leaf punch; I painted some glossy paper with various green and brown AK pens, then punched out hundreds of leaves:

The wall looks shiny in these outdoor shots, but once I finish weathering and coloring it, I'll spray a matte finish:


I need to add more static grass (I made a static grass applicator and have yet to shock myself) and make a small tree or bush. I may move some of the larger clumps of grass, or add more clumps and clutter. Luckily, most of the grassy groundwork is easy to move around.