I am a wargame 3D building constructor...Right now i am building a Batcave(Batmans Hideout..lol) for the game Heroclix...approx. 1/43 scale. The construction is all polystyrene (blue foam). I want to install LED lights into a few areas of the cave...Please understand that i know nothing of this 1. Can i use battery power to run the LEDs? (preffered if possible) 2. Will LEDs be sufficient light to run fiber optics? I want to cast a beam 3" in diameter... 3. Where is a cheap source for LEDs? (clear mostly) I am sure more questions will arise as i learn more Thanks in advance!!