So a google-ing I go - looking up designs that others have come up with. Not that plagiarism is on my mind, far from it - my goal is to stimulate that magic gland in the brain that puts two unmatched things together (3-d Escher drawing hands; I'd always wondered what that would look like in three dimensions....). In this case I was looking for Alien photos that showed detail needed to work on another in progress rig (HR Giger Alien) and came across the Predator, specifically the one from Predators. In that spark of excitement that signals a good idea, I tossed the image around in my skull and settled on the Ibanez Voyager as the proper shape to hold it.
Now you have to actually visualize the design - this process is aided by the 'puter with Photoshop and Visio (a tool I have a ton of experience with). I had to stretch the Voyager dimensions a little to get it to behave with the Pups and the design.
Funny how those thoughts run together