Ok, I know this isn't an advanced model - and to Sketchup veterans I apologise...
I initially wished to make a Steampunk ray gun design for the WETA 'Ray Gun Shootout' design competition - BUT, they do not allow SketchUp submissions, only Blender (and my noob model just didn't import into Blender well at all). SO I ended up just doing the model for fun.
Here's a 2D bit of silliness I did with the model...
If anyone is interested in the model I have uploaded it to the 3D Warehouse - and if you find out a way to get a Blender version out of it, please let me know!
3D Warehouse: http://sketchup.google.com/3dwarehouse/details?mid=3820e57b803a310e8406a662593eab65&prevstart=0
Well...I hope you find the model entertaining.
Steve