Because literally everything that exists in the world could stand to be a little nerdier, Think Geek now sells the "Power-Up Arcade Light Switch Plate
," which is pretty much exactly what it sounds like.
As shown in the demonstration above, the replacement light switch cover attaches to the wall over
your existing light switch, rather than replacing the entire assembly altogether -- helpful for people who enjoy retro gaming sensibilities but aren't super keen on being electrocuted to death.
Two double-A batteries power the button-triggered sound-effects and night light, but the increase in your electric bill from switching your lights on and off all day probably isn't factored into the kit's $30 price tag.