Do you want to design a shell for your Gadgeteer creation? The team at MSR Cambridge have added 44 highly detailed 3D models to the Gadgeteer Codeplex project. Look in \3D Models\MSR Contributed\ in the source repository.
These models can be used with 3D design programs like Autodesk's 123D, Adobe Inventor, or SolidWorks. Once you've designed a shell you like, you can use a 3D printer to make it. If you don't have a 3D printer at home, school or work, services like Ponoko and Shapeways will print your design and mail it to you.
Happy making, and if you create something you like please post pics!
More info: http://blogs.msdn.com/b/...-gadgeteer-hardware.aspx