In the weeks leading up to the Denver Maker Faire, I decided to design a case to hold an Arduino and the voice changer shield that I had designed. I wanted to make it easy for people to have a go at talking like a Dalek. It turned out to be a huge success!
The voice changer was connected to powered speakers inside the Dalek, and also connected to the LEDs in the dome. This did a pretty convincing job of making it look like the Dalek was talking.
I've uploaded the design to Thingiverse here for any previous voice changer customers who want to print their own case.