Batiste Tinkers!

"The vibration motors aren't powerful enough." Batiste's original design for a massaging helmet turns out to be a lesson in trial and error.

The final design mimics a traffic light and a car that moves with the help of two vibration motors.

Maya Tinkers!

Maya, this year's first classroom tinkerer, demonstrates her creation for Lincoln and Carl.

Dubbed "There Goes the Door," Maya's design sends a cardboard character crashing through the front door of a Halloween house.