Here's a thought ... use a large clean tall plastic trash can and line it outside (and inside if you want) with Rock Wall Corrugated Paper, has a stone pattern, from a place such as: https://www.stumpsparty.com
You can then place items around it like real or artificial plants, rocks, etc. We've used the patterned corrugated paper for oodles of things like boats, castles, wells, etc. It's flexible, easy to cut to fit, and we've used it over and over for various scenes.
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