Something Handy for "Summer Camp"

Designers Feijun Chen & Bin Zhao clearly were reading Skymall when they dreamed up these "Pioneer" sneakers with built-in recharging headlights. They've got a battery inside which charges on each step, using some mysterious tech that doesn't look piezoelectric. Apparently this can power the LEDs in the front for a full 12 hours. So you can, you know: run in the dark down dim-lit streets, or something. Who knows the cost!

Maybe they'd be handy for Youth Summer Camp?