In the past few years, we have covered plenty of amazing plasma lamps here. The 25-inch Green Crackle Tube from Can You Imagine is also worth a look. It reacts to sounds and touch. It has sensitivity and pattern knobs. It has auto and manual modes.
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25-inch Green Crackle Tube from Can You Imagine -- Gadgetify
These crackle tubes can be made in a variety of colors. They are rare but you may be able to find one on eBay.
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