With the dark forces of the fairytale kingdom all around us, I wanted something that make the ground looked like it was cooking and smoldering.

Again, this started with some OSB.

That i sprayed black (looks very white in the picture)

 Next i took some plastic beverage bottles of various sizes and shapes (2 litre, 1 litre, 20oz, etc) and cut them into different sizes

Then i randomly placed some LED halloween string lights on the OSB and randomly placed the plastic bottles over them

Then i sprayed spray foam all over the whole thing

and finally dusted it with some black

Anywhere the black is, the lights will not shine through and will give a "charcoal" kind of effect

And finally with the string lights turned on