Photos: Transformers come to life--at the movies

For role playing, Hasbro's Optimus Prime Voice Changer Helmet can turn any kid into the leader of the Autobots. The helmet has three features: a voice changer to make your voice sound like a robot, prerecorded phrases from Optimus Prime, and sounds such as changing from a robot to a truck and back. Its list price is $29.95 for ages 5 and older.

Photo by Hasbro