Four  Iowa Scaled Engineering   cicada sound modules are used on this train show module.  It's set up to be motion activated , and two of the toy cicadas used on rooftops have illuminated eyes.  This display will be at an August  fair in Essex Junction, VT.  It's a bit of humor for the casual observer.

The "ceiling" of the structure has the 45 degree angle styrene mount for the two pieces of fibre optic, aligned with the LED.  The Evan Designs LEDs have an inline circuit allowing them to run on a range of low voltage.

Need a prototype for giant cicadas ?  Here's one emerging from a cocoon during the Fourth of July parade in Warren, Vermont.