>>7182768Whoa! Mega-Kool! I'd never seen your castle in its entirety! Some thoughts about lighting. At Michaels, they have a battery box (2 AA) with 10 white LEDs. When you turn on the box, all 10 of the lights turn on simultaneously.
The individual LEDs each have a foot of wire attaching them to the box, which could be extended using spare wire and a soldering iron. The battery box itself could be hidden inside a wooden crate, and perhaps there are clever ways of disguising the wires leading to each room (one LED per room).