Step 1: Supplies
What you will need:
A watch battery.
A pager motor with its casing.
A small piece of foam tape. (double sided)
First cut the head off the toothbrush with the wire cutters. (the toothbrush i used was made of some sort of soft plastic so the wire cutters worked really well)
Step 2: Adding the Motor
Attach a piece of foam tape on top of the toothbrush head.
Then add the pager motor on the end of the toothbrush
Step 3: Adding the Battery
Now attach the battery behind the motor and connect the wires from the motor to the leads of the battery. (you can attach the top wire to the battery with a small piece of foam tape)
And your done! If it works it should move when you connect the wires.