Charge those USB devices by breathing

Just in case your USB charger for your cellphone or other gadget (like an MP3 player) has been lost or your just plain tired of charging it the 'normal' way, who says you can't have a little fun charging that gadget. That is, as long as you have the capability of breathing at will.

Yes, this body/gadget hack involves arresting your breathing habits and in turn using that power to actually charge devices that require a USB-type mini-plug to get that battery juiced up again. Almost all MP3 players -- including the iPod - charge by USB, and many newer phones do as well (even the aging Motorola RAZR).

Think this hack cannot be done? Using parts from an old CD-ROM drive, a few rubber bands and a little knowledge in electronic circuits will have you ready to charge those USB devices just sitting at your desk all day. Now, some of you would prefer your nearby PC to all the work, but if you really need to charge those devices in a pinch with no PC or electrical outlet around -- like camping on a mountaintop -- this would do the trick.

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