here I'll show you how to make a tooth brush robot out of a few simple pieces, I know theres been a lot of other ible's of the same thing but mine is a bit different and can be charged over and over. this is my own design of this robot, you need:
-Mini vibration motor
-Tooth brush head
Step 1: The Set Up
First you are going to wire everything up. I just soldered the motor onto the capacitor, but id you dont have a capacitor then connect the motor to a small battery. you can also add a switch if you want.
Step 2: Attach the Head
now glue your motor and electricity source to your tooth brush head, I cut the middle strip of bristles off then I glued it to the bottom for the first type, for the second type i glued it to the top. the first type works alot better because of the angle bristle heads. the second type falls over more and just spins around most of the time.
Step 3: Let it Loose
now either charge your capictor or connect the battery to your motor and let your robot loose!