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A nixie tube based ‘plasma globe’ toy that glows in response to anything conductive touching the outer glass.
The main feature though is when touched it will operate a low-voltage relay for about a second which can be used to interface to your own project or connect to a PC motherboard to switch a computer on/off. Activating your missile launch sequence is also possible but not recommended.
Supplied as a kit of all parts required, it will take most constructors around 30 minutes to assemble and includes an IN-1 nixie tube, USB lead, suitable UK plug mains to 5V adapter and phenolic laminate case parts.