A chap in Australia was wearing a particular combination of man-made fibres and managed to generate 30,000 volts of static electricity, causing serious problems for the place where it discharged itself:
I don’t know about you, but this has huge potential to me. We could all wear this stuff then syphon it off into the national power supply. Wear it at the gym and then use the electricity to watch a bit of TV when you get home… Alternatively it could become a bizarre form of industrial espionage: banks could employ people to innocently discharge 30,000 volts into the cash machines of competitors. The possibilities are endless!