Highly highly recommend these, you'll have one for everyplace you need to charge your phone and they are incredibly durable and well made.

http://www.amazon.com/gp/aw/d/B00T33F3DO/ref=pd_aw_sim_107_2?ie=UTF8&dpID=61SmEItlYVL&dpSrc=sims&preST=_AC_UL100_SR100%2C100_&refRID=0N3XJHKHK4JW5P05XWXP