Watch this creative retelling of the Parable of the Unforgiving Servant - it may inspire you to have some fun with the retelling of the story. (Let it go, let it go!!  
Kid Bible Stories, Episode 1 (the unmerciful servant) - about six minutes long, from First Baptist Church of Marble Falls (Texas).
Ways to use this video in class:
- as a discussion starter/review about what the Bible actually did and did not say.
- as inspiration for the class to create their own creative fun retelling.
- as inspiration for the teacher to shepherd the class through the creative process to retell and re-enact the parable.