Wind-Up Torch with Mobile Phone Charger - just £6.30 @ Woolworths.
Was £14; now reduced to £7 and use code WW1 to get another 10% off. Please note that you can use WW1 only once and hence its better to group your purchases before applying the discount. Ideal present & choice of 3 colours : blue / pink/ black.
Description : With this Wind-Up Torch with Mobile Phone Charger it's back to the old technology of self reliant muscle power! Simply turn the handle anti-clock wise to charge your phone or the LED torch. One minute of winding the handle charges the Lithium-ion battery enough to give 30 minutes of light. Where 2 to 3 minutes of winding will recharge a mobile phone giving between 2 to 8 minutes of call time depending on the model of the phone. No more battieries, no more problems!
Features : Super bright LEDs | 30 mins light - 1 minute winding | 10 year life on LEDs | TPR made handle with a soft and smooth feeling grip
For a complete list of compatible mobiles, please refer to the second comment.