Ideas for the classroom:
1) In History, research a famous historical figure: have them "saying" a famous quote.
2) In Language Arts, create a voki for a character in a novel. Have them "saying" a line of dialogue.
3) In World Language, have students introduce themselves in the target language
4) In Math, have students define mathematical terms.
5) In Science, have vokis report the results of a lab.
For more ideas, check out: Voki Lesson Plans