While many hacks we feature on these virtual pages are terrifyingly complex, this one is anything but. Even more surprising, it's actually useful. Mark Bog decided to tether his Magic Trackpad to the sweet, endless power supply of his computer over USB, instead of swapping out AAs endlessly. To do this he merely pulled out the black and red power wires of a USB cable and attached them to a battery-shaped dowel, which slots easily into the Trackpad. The best part is that this seems basically non-destructive to the trackpad (if the 5 volts coming from the USB cable isn't too much for its precious internals), so Mark shouldn't have much trouble switching back if he suddenly misses the wireless freedom for a stationary desktop object that so far seems lost on him.