I couldn't resist to try myself : I created a cube in Blender, divided one of its sides in 64x64 faces with Mesh > Edges > Subdivide menu item, then selected some vertices randomly with Select > Random menu item to move them a little bit on the left, and repeated random selections to move other vertices towards each direction.
The 3D model imported in Sweet Home 3D gives the following result at the best quality level:



Not too bad, isn't it?
The attached frostedGlass.obj file will let you try yourself.