Concentrate on applications that encourage creating and expressing ideas.
Using tablets for multimedia notebook let me explain by example:
Task for students SYSTEMS:
Using cameras and recorders & pictures to explain systems’ such as ‘how do you pick up a slip when you have missed a day of school’. Or ‘how do you check out a library book, either physical or electronic’.  With students videoing themselves explaining their choice.  For apple try out a program called Explain Everything .  For android try Easy Voice Recorder, or Smart Voice Recorder.

That way the students can explain their choice using pictures, diagrams arrows (whatever) as well as their oral explanations.