If your looking for a neat DIY project this weekend then this DIY 9V Battery USB charger could be a fun gadgets to create, with only using a few components including a 9V battery, female USB port from an old PC and a small 5v regulator.
With some simple soldering viola you have a purpose built tiny portable USB charger for when you on the move which can be instantly recharged with an easily available new 9v battery.
For full instruction on how to make the useful gadget pop over to Unplugged.
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