Why do electronics in my room randomly turn on?

My sister's laptop turned on not too long ago and that is why i'm on it right now. Sometimes my alarm clock will turn on and then the volume will keep going up when nobody is around it. It will get so loud. And sometimes our TV turns off on it's own. Then the light swift will go off and on. It creeps us out. Also cords sometimes start swinging on their own when nobody is doing anything. Or things randomly drop and fall of the dresser. Also a couple of years ago my sister's remote would fall of the tv many times. Not just fall down. But when it would fall it would like fly off like 3 feet. What could this be? Do you think my room in haunted? It's just our room that this weird stuff happens too.
 
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