The Gecko Switch is a smart moveable light switch. What does that mean? It means that your light switch is no longer anchored to one place on the wall like a traditional switch. It uses Gecko Glue on the back of the switch, and when the glue starts losing it's adhesiveness, you simply clean the it with water to regain the stickiness.
Aside from not being tethered to a location, the light switch also has a lot of advanced functionality, like being able to turn off/on, timer, dimmer, and can even gradually increase the brightness over time, which is handy for waking up in the mornings.