Fun/Interesting Visuals?

[HamSandwich]

I'm working on a tube effect that's in a pretty large enclosure, and I'm basing the enclosure design off the big cannon from FF7. I thought it would be fun to add some sort of interesting visual effect to it. I thought about putting an LED bar graph that would increase as the drive knob is turned up simply by using a dual gang pot and putting a CV on one of the gangs to control an LED controller, but there certainly has to be something more interesting out there. Or something that flashed faster as the drive increased, but I have a feeling a simple flashing LED wouldn't too interesting. Perhaps a multi color LED fading between colors.

This is real cool, but probably a little outside of what I could put together. Unless there's a kit for this type tube thing out there:
https://www.youtube.com/watch?v=MsUJxcTFRYI&feature=youtu.be&t=1m38s

The basic requirement is that it doesn't consume a whole lot of power. I have extra amps on tap for the tubes, but probably not enough for something like a whole extra preamp tube.

Thanks for any suggestions!

[EBK]

I don't know anything about FF7, but I do know there are lots of options for really slick displays/visuals out there.  Take a look through the Adafruit site, and you might find some inspiration, like maybe these NeoPixels:
https://www.adafruit.com/product/2842?length=1

[jtn191]

I really like "magic eye" tubes and wanted to build one into an amp/pedal

[HamSandwich]

I don't know anything about FF7, but I do know there are lots of options for really slick displays/visuals out there.  Take a look through the Adafruit site, and you might find some inspiration, like maybe these NeoPixels:
https://www.adafruit.com/product/2842?length=1

The product you linked to looks amazing. But, it might be a little too much power and maybe too intense. On the site though, something like this looks interesting, but I'm not sure if I'd be able to control the rate that it all moves around:

https://www.adafruit.com/product/2859

I really like "magic eye" tubes and wanted to build one into an amp/pedal

Agreed! Although I can't really think of a way to use one for this project. Delays and modulation for sure though. I'm working on a pre-ampy sort of drive thing.