Atari 2600 Adventure Trophy Chalice

This a a trophy that can only be bestowed to the Champion of the Yellow Castle. You know who you are.

I put Radio Shack Yellow LEDs inside this thing, but regret using insufficiently bright ones as evidenced by this poorly lit video:

https://youtu.be/cLIrqy7jPZY

I'd recommend getting the brightest white LEDs you can find and put them anywhere that'll fit before gluing the halves of the Chalice together.

If you want to fit a 9V battery in the base compartment, scale it up by another