Step 5: Sit back while your kids turn on their own light.
The coat hanger needs to be stiff, since turning the light on depends on the ability to push the wire up without bending it. One of mine was thinner ...
Step 2: Make the push-pull toggle
If you have a bead that already has a hole in it, you are golden. If not, cut a piece of dowel ~1/2" long. Drill a hole slightly wider than the thickness of the coat hanger wire through the axis of the piece. You might want to round the edges off a bit with sandpaper.