@JohnADaniels You forgot the Mesh Tool in the current tools 
You can either create your own C++ tool without editing the plugin, use a mesh stamp with a star mesh, or use a Voxel Graph Tool: using a voxel graph as a tool, like here for example with a crater:
Voxel Graph:
GetPreviousGeneratorValue will return the current voxel value.
Then to use it, in a regular blueprint:
