The first few pics shown here are what I was able to accomplish without spending a cent. All materials used were stuff I had laying around the house from other projects.
The diorama measures 47 by 26 inches and was with four slabs of styrofoam, grass sheet, duct tape, paint. newspaper, modeling clay, play doh. a bunch of tiny nails, cardboard, and some sky background. Keep scrolling down to see this project evolve.