Charge your phone by SHOUTING at it: Gadget converts sound waves from speech into five volts of energy for your mobile.
As soon as I read this I thought, ‘Must get one’, as did the rest our our block/street. It would probably only take a few seconds to charge up my mobile if I held it up on the balcony as, across the road, is an English couple whose regular ‘discussions’, at 300 decibels and consisting almost entirely of expletives, would certainly do the job.
Just have to make sure the phone didn’t overcharge! Those two could probably power the national grid!