My free technology is an app available through itunes called Story Creator
Children would be able to upload or draw pictures and then record a story with this app. They can then share it with others. This could be used in many ways. One is for children to use information they have gained during a lesson or unit and compose a story, or maybe modify the ending of a story. Other children could use the recording capability to evaluate their fluency with reading.
I think this would be a great app to use in many different ways!