Yesternight I was at the Milwaukee Makerspace. I wired up the LEDs for the Tardis I 3D printed a month or so ago. While I was there, I also 3D printed four more white bases for the wobbly chess set.
Last weekend, I bought six ultra-bright white LEDs from Radio Shack. They will go into the top of the Tardis. The plans for the Tardis on Thingiverse included a support that will hold four small LEDs. A fifth LED will go into the top of the Tardis.
I used the circuit shown below that I got from a website that helps design circuits for LEDs. (See this blog post for details about the circuit design. Also, here is a link to the circuit below on Digikey's SchemeIt tool.)
I got the resistors, some wire, and a 9v battery plug at the Makerspace. Below are some pictures of the soldered together LEDs both outside of the Tardis and then installed inside it. I still have to wire in a switch that will attach to a special pieces in the bottom of the Tardis. My son thinks I should put some kind of pushbutton switch on the top of the Tardis. I'll have to look into that. Finally, one of the windows for the Tardis are no longer in my locker. I'll have to print another one. Then, I can assemble the lights into the Tardis.