Thank you panzerlite, if you enjoy modeling, it's a pleasure to make something.
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Some paper bolts and nuts.
I used silver paper on a perforated box. When panzerlite already mentioned a sharp knife, 99 holes cut out using a scalpel,
I was lazy to look for a hammer hole punch. :D
A orange LED light to illuminate of interior a high voltage power supply will be placed in the square hole.
Simultaneously in sketchup I create a 3D model of voltage source, the fission battery. I had to design my own battery,
because battery from game was ugly as hell (maybe as two hells) and neither "high resolution" texture did not help. :/