See, for being a shoebox, my room has two very nice windows, one of which is right next to my head. (This does get a little creepy, however, since I can see every shadow of the outside world, and sometimes, I get paranoid and start seeing things.)

I did have one of the living room windows open, and it was sending a plastic bag that I'd left on the floor skittering across the kitchen. THAT was creepy. I didn't know what it was, but I kept hearing it as I was on the computer, and it thoroughly frightened me.

Being alone at night is not always the best thing for me, especially since I tend to not logically figure out what noises are noises and why.