Project needs help

Ok. So I am printing a 3d model of the ghost from destiny... and it has a small LED light that activates when I twist the body. I'd like to make a hologram that spells the words "Hello Titan". I have seen some people use simple Holographic paper pyramid but how could I do this? After this is done I want to put a speaker with a pre recorded voice that says the same thing everytime the light activates? (Help would really be appreciated :)