Magic Cable Trio

The good news: the world has standardized on mini- and micro-USB. The bad news: the cables are too long for your day bag. This minimalist 3-in-1 connector combines a mini-USB, micro-USB, and an iPhone 30-pin adapter in a single gadget. As simple as possible, but no simpler, this is the cable Einstein would have carried. I’ve had mine for a year and use it every day.

-- Meng Wong  

Innergie Magic Cable Trio
$15

Available from Amazon