I’d prefer a solar mobile charger, but this wind up one is cool and a lot cheaper. You could give it to kids to restrict the calls they made on their mobile and get them to exercise.

Though with one arm much more pumped up than the other, people might start to talk…..

via hippyshopper, who have a far more sensible idea of using it at festivals and other occasions when you don’t want to be caught in a field with no charge.

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