Picture this: Your Halloween decorations are up, the lights are on, but you don’t want to shut them off when going to bed because you’ll kill the vibe (and everyone will know you go to bed at 9). Using a smart plug and setting up a routine can solve the problem, shutting everything down safely in the middle of the night. Lucky for you, the Amazon Smart Plug is only $13 at Amazon right now, a massive 48% discount from its original $25 price. Smart plugs aren’t just useful on Halloween, of course. They can also control other holiday lights, not to mention your fans, your coffee machine in the mo…