Mobile operator Orange and renewable energy specialists GotWind know they’ve hit on a good, marketable idea. The companies have joined forces for a third consecutive year to showcase their outdoor charging solution at next month's Glastonbury Festival, the United Kingdom’s largest and hippest open-air music bash. This year Orange has unveiled a mobile phone charger prototype it’s calling the Orange Power Pump. By treading on what is essentially a standard camping air foot-pump, the kinetic energy created drives a small turbine inside the Power Pump. The energy is converted into electrical current, which recharges the mobile phone. The idea is not only simple, it cleverly encourages you to dance and charge your mobile at the same time.