This is the best way to turn off a light switch
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Step 1: The Hook
Place a hook with a screw in the ceiling.
Step 2: The Pulley
Hook up the pulley on the screw.
Step 3: The Dustpan
Set up a dustpan that can be lifted by the pulley.
Step 4: The Ramp
Set up a cardboard inclined plane that lays on top of books.
Step 5: The Lever
Get a dustpan that has a handle that can tilt and set it up.
Step 6: The Light Switch
Tie a string from the dustpan handle to the light switch.
Step 7: The Ball
Place a baseball in the dustpan.
Step 8: The Beginning
Pull the pulley so the dustpan lifts and the ball falls out onto the cardboard ramp.
Step 9: Hitting the Handle
The baseball will hit the handle of the dustpan and knock it over.
Step 10: Flipping the Switch!
The handle will fall, pulling the string and turning off the lights.