So far, here is the Eye Socket in it's (most likely) final form:
I went ahead and combined the individual element rings into a single piece because I think my CNC router should be able to fabricate it. I also replaced the individual ringed spacers with plastic spacers which should reduce cost and complexity. In addition, this design will give me the ability to adjust the spacing. I changed some hardware for the SPDT switch mounting bracket and added the remaining hardware callouts.