Audio Bibles that come in a preferred language and you can also use SD cards. That would allow you to use Eliyah's teachings. http://www.renewoutreach.com/papyrus-solar-powered-audio-player/
Another awesome tool is this: http://www.renewoutreach.com/lightstream
Allowing you to be a wifi hotspot anywhere for teachings and bible readings. It can automatically download to people's devices. This is working out great in hostile countries spreading the Good News covertly, digitally.
"I have found truly joyful Christians only in the Bible, in the Underground Church, and in prison." Richard Wurmbrand, Tortured For Christ