The iStubz is a miniature USB cable for iPhones/iPods. It comes in either 7cm or 22cm lengths, and is probably the best eight dollar purchase I've made in the past year. The reason I'm so in love with this little tool is that it can live permanently in my bag without taking up any space or tangling up on anything. It's ideal for charging/syncing from my laptop, keeping cables from getting tangled. It's doubly useful when coupled with the small USB charger packaged with the iPhone. I keep them mated in my bag, so if I happen to be somewhere without my laptop or a convenient USB port, I can charge the device.

$8 (7cm)
Available from Amazon
$9 (22cm)
Available from Amazon

Manufactured by CableJive