In my previous article, I took some plastic plants from the dollar store and based them up for the tabletop as gigantic plants.
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Same idea, different plastic succulent. Definitely sci-fi or fantasy, I would think!
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This type is a 'flatter' plant, so it's not blocking line of sight as much as the previous plants.
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Here's a shot with a 28mm figure to give a sense of scale…
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…and if we look from ground level, you can see that this plant is shorter then the previous ones.
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In fact, the plant is flat enough that your players will want to know: "Can my troops walk on that? Can my vehicle drive over that?" It's your call.