This design allows you to use a string to turn on and off a flat or panel lightswitch from in bed. There are different L pieces and different axles for different light switch sizes and 3d printer tolerances. Then to get it to you bed I used a string and some small eyebold ring screws to route the string through. Finally, you can tie the string to an extra L piece and pull on it whenever you want to turn off your light. You can see the rough assembly in the photo, and I used an 8th inch wooden dowel instead of plastic becaause it turned better.