Below is a simple model of a paraboloid. This object was made in grasshopper using a simple waffle parametric design. It makes for a really cool pen holder!
The following parametric models of knurling patterns were created using Rhino's Grasshopper. These are dynamic pattern that can be applied to any four sided surface (from within Rhino).
The following image was created using Rhino's Grasshopper. It is a parametric model of a complex pipe system. The Grasshopper parametric function resolves the intersection between all of the different pipes automatically (and it outputs a polygon mesh).
The following geometry was created using a dodecahedron as a base model. Simply put, this was created from intersecting cubes within the dodecahedron. It was modeled in Rhino with the help of grasshopper.
The following fractal was created using a simple grasshopper parametric design with the help of a delaunay triangulation and a loop plugin called "Hoopsnake".