In this Rhino Grasshopper Kangaroo Example file you can design a parametric building by grabbing the base roof in Rhino and deforming it. Free Example File
In this Grasshopper Kangaroo example file, you can design a parametric shell between two curves by incorporating wind force into the Kangaroo simulation. Example File
In this Grasshopper tutorial for beginners, you can design a parametric structure by defining only 3 points and the number of divisions and using the dispatch technique. Example + Tutorial
In this Grasshopper example file, you can create a series of parametric contours and then convert them into perpendicular pipes stacked on each other. Example File