Here is an original piece of art from Your Wild World. Full of creative angst one day, this item was spewed from the mind of Connor Boyd.
For single extruders:
Print out the file FINAL_WIZARD_TREE.STL
We used 10% infill with 2 shells, and no support.
For dual extruders:
Merge BASE.STL and BODIES.STL.
For this we used 10% infill in the base with 2 shells, and 0% infill with 2 shells in the Bodies portion of the print. We also recommend unloading the base extruder after the base prints, or keeping your extrusion temps on the lower side, around 210 degrees C or so to prevent oozing from the other extruder.