I was in Senegal recently and heard a testimony of how God is using inexpensive solar powered audio devices preprogrammed with the New Testament to reach the people of Senegal. The local believer said that she heard of several cases where groups of people would gather around to listen to God’s word and discuss it together. This is especially effective in areas where literacy rates are low. The solar powered aspect is handy as well.
The believer mentioned MegaVoice, http://megavoice.com/, but I’ve also worked with Faith Comes By Hearing, http://www.faithcomesbyhearing.com/ where they have 590 languages available. Consider using these devises in your ministry or supporting one of these two ministies.