Is it really possible to build an iPod recharger with a couple of standard AA batteries and an Altoids gum tin? This post gives step-by-step instructions to assemble what it says is a "very powerful USB charger for your MP3 player, camera, cell phone, and any other gadget you can plug into a USB port to charge." And if you have more spare tins lying around, you can try your hand at some other homemade gadgets.
Mac running slow?
Boost your computer with these five useful tips that will clean up the clutter.