We spent some time figuring out the process to create forced perspective graphics, so things look real from one angle, but are really crazy skewed. We had success with photoshop and sketchup, but in the end the most effective workflow was just pointing a projector at the surface and tracing/mapping the result from above.
The Digital Media Lab is located in Geisel Library, 2nd Floor South. We do free 3D printing and advanced media consultations for all UCSD Affiliates. Contact us at DMLtech@ucsd.edu.