I moved a piece of furniture but it covered a light switch I had to use. This gadget attaches using the light switch cover plate screw and lets you turn off and on the switch. See pictures. Could also be put on upside down so short kids could reach the switch ...someone suggested that someone in a wheelchair might also find this useful if mounted upside down.

Version 4 Modified the design with a shorter slot for the screw and stiffeners to keep the thing from bending.