it was general conference last weekend so that means time to rotate and update 72hr kits!
i already posted my take on how to do them here, but here are some other helpful links:
http://www.americanfamilysafety.com/72-hour-kits.html
http://www.survivalsolutions.com/store/72houremergencykits.html
http://lds.about.com/od/preparednessfoodstorage/a/72hour_kit.htm
http://72hours.org/build_kit.html
http://www.thereadystore.com/survival-kits/72-hour-kits
best of luck!