They are based off the trees 2nd ed. 40K alien trees, as well as the MOTU Whispering woods.
All I did was go to a local craft store, bought floral wire, and the lichen. Then got some gauze tape from the local pharmacy covered it in light putty.Next step was priming it with spray paint, then drybrushing it and used the hot glue gun to put the lichen in place.
Now what magic treasures could be hiding in there?
The bones are from the new Funko Bat Cave toyset. I just gave it a wash and drybrushed it. *Tip* If I was to do it over I would prime it with spraypaint first.