Old CRT with coil wound of 2.5 mm² copper pvc insulated wire, connected to a 12 Volts 80 Ah accu.
To see if the glass would break.
It didn't.
It was vented with a pair of pliers afterwards.
Some rainbow LED's are on display, given to me by Fukinexplosions. very nice coulours. The camera doesn't pick that up too well.

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