Buy one of these. It is a wall charger/external battery with two usb plugs. You can charge your iPad, iPhone and Blackberry from this WITHOUT a wall plug. Just charge it up when you are near a wall socket and then you will always have a way to charge up your handheld devices.

http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER

I would also suggest short cables for each device. There is generally no reason to have three feet of cord for charging. Most of my cables are six inches long.

Mini-USB
http://www.amazon.com/Charging-Cable...sr=1-1-catcorr


Mini-USB to micro-USB adapter

http://www.amazon.com/Micro-USB-Mini...1&sr=1-2-fkmr0

iPod/iPad short cable
http://www.amazon.com/RadTech-ProCab...5478018&sr=1-1

Even shorter cable similar to above
http://www.amazon.com/RadTech-ProCab...5478018&sr=1-4



Sounds like you will need to bring your power brick for the laptop.