We have posted a new tutorial on the documentation page which outlines the basic workflow for creating arbitrarily shaped clouds (including bunnies ).
thinkboxsoftware.com/krak-clouds-modelling/
The page also contains two download links for the MagmaFlow files used in the tutorial, but just in case I am attaching them here too.
NOTE: The previously posted CloudFlow2 did not contain the right flow (it was a duplicate of CloudFlow1). The new ZIP fixes this and also includes the SelectDensityZero flow as bonus.
CloudFlow2.zip (2.87 KB)