In the past few years, we have covered plenty of cool flat plasma lamps here. This 20-inch Sunburst Luminglas is one of the rarest ones around. It is a flat plasma lamp that reacts to touch, sound and music. It has two knobs for adjusting sound sensitivity and pattern.
These 20-inch Luminglas displays were made in 4 different colors (including blue which is easier to find). You can find them on eBay or have plasma artists build a custom one for you.