It's alive!

So, in the process of building my time machine (irrelevant, won't go into that here) I wanted to build a hookah pipe style e-cig. Something a bit steampunk to match the aesthetic of my ongoing project.
The box is to be wall-mounted with a nice hook for the handpiece.

Details:
VV 3-6.5V
Green LEDs in handpiece.
Main power off switch.
Digital LED voltmeter off switch.

Yay! No more changing batteries at my workstation.