Here is how I made this easy drawing robot for my kids.
All stuff can be available at your hand.
You too can make this little drawing robot for your kids during so little time and using things you already have at home.
Step 1: Components
Step 2: The Motor
Step 3: Assemble the Robot
Use the tape to fix the motor on the bottom of the plastic cup while it's in upside down position.
Attach the battery to the plastic cup.
Attach the color pen to the cup so its tip is slightly shifted over the top of the plastic cup.