I have this vague idea that there are a lot of talented designers in the SketchUp community who may be looking for interesting projects on which to hone their SketchUp skills.
I just ran across The Open Prosthetics Project which is producing useful innovations in the field of prosthetics and freely sharing the designs. http://openprosthetics.wikispot.org/Front_Page The following two items from that page caught my eye:
If you have ever built anything with LEGO, you'll be fascinated by http://www.openprosthetics.org/myoelectric which has an Articulated LEGO Hand. Be sure to watch the video of it in motion.
Also, the Vector Prehensor is in need of help to detail the 3D motions of this device that, until recently, had been snagged by potential infringement on a 1954 German patent. http://openprosthetics.wikispot.org/Vector_Prehensor
I hope this helps,
August