Or rather the laser oscilloscope. Via ModularSynthesis where you'll find a video of the laser being used with a MOTM E350 Morphing Terrarium.

"I've always liked XY audio oscilloscope displays so I decided to build an XY laser using a Midwest Laser scanner. My first images were using my MOTM E350 Morphing Terrarium which generates some pretty nice patterns."

YouTube Uploaded by dolphinicus on Feb 3, 2012

"This video is of just under 1/2 of the 1st Official $PLURJ! Noise Piece. Created with my $PLURJ! modular synthesizer that I've created / built, using 2 x Voltage Controlled Oscillators as audio sources and many, many other modules as modulators. It'd take forever to describe the patch. Outside of that - no effects were used. It's all pure $PLURJ!

YouTube Uploaded by drmoonstien on Feb 2, 2012

drmoonstien on eBay (RSS)

"demo of hand built noise machine that can be purchased on ebay."

YouTube Uploaded by RecoHead on Feb 2, 2012

YouTube Uploaded by RecoHead on Feb 2, 2012

via this auction
analogsd (RSS)

via this auction
"As you can see from the pictures, it has got custom wood fluro green case (it looks so flury because of the camera flash - in normal light it looks more normal greenish colour).
The synth and the case are not connected with each other (no screws or anything), so you can take the synth out any time and tune it or modify it even more ;-)
I am a really honest person, so I would

YouTube Uploaded by HarryMatic on Feb 1, 2012

"A video of the new and improved VS1103b MIDI Synthesizer I have made. Schematics, stripboard layout, more photos and a full writeup can be found at : http://www.instructables.com/id/E82VEK1GXUZ7YJA/"

YouTube Uploaded by RecoHead on Feb 1, 2012

"molina's toy"

URECO-SYNTH

YouTube Uploaded by abagofcrisps on Apr 25, 2010

"the result of my senior project. part arcade machine, part guitar.
it's powered by an fpga, and the strings are membrane potentiometers"