Occasionally, my dad gets up out of bed to get food at night (usually eating foods he says he hates, like candy) and that can be creepy if you have a friend over and it's past midnight. To be honest, I'm not sure it's always my dad. Also, my neighborhood is infested with raccoons. Some of them come and bang on the sliding glass door in my room to try to get in. Also, my house's previous owners had a cat (which I'm allergic to, I might add) and they installed cat doors in my room, among other places. Luckily, I keep a piece of metal over the cat door, but the previous homeowners reported that once a raccoon got in through the door and ate Cheerios until it was driven away.
My little brother, who is a big scaredy-cat, refuses to go outside alone at night, even if it's in the front yard which is surrounded by other houses and a spot where my mom can easily see him from the front window. Because of his fear, if he has to, say, take out the garbage cans, he always has to have me and a flashlight come with him. The raccoons have been out eating our trash before, but that was a long time ago.
One more thing is my house creaks a lot, but it's not scary whatsoever.