Here is a mouse trap I made for an Instructable 3D design competition:
This competition was about 3D printing, so it's low poly and the blend is not setup for animation or textured very well, but the model is pretty neat.
Tucked into the back is a to-scale mockup of an Arduino Uno. On the other side you'll find a to-scale mock up of my breadboard with various components.
Maybe someone can find some use out of this.