Aside from OEM/stock (HTC, LG, Asus & Motorola) cables that go with the USB chargers - these flat ones @eBay/USA seller are good for my needs (up to 2 amps for the Nexus 7) including quick charging - carry both the 3' an 6' variants, store flat & easy to stash away, inexpensive and shipped free - delivered in less than a week. Got them in bright orange color & easy to visualize to reduce the odds of being left behin or forgotten in the hotels.
http://www.ebay.com/itm/Color-Flat-M...item2ed0a63a31