R.S.
My 3 year old started this with being afraid of "spooky things" that he claimed were in his room - anything from crabs to elephants to an old thumb-tack hole on the wall... I have a perfume of mine that we use together to "spray" the spookies away. We say, "Be gone spooky _______!" and spritz the perfume into the air. I read this somewhere and thought there was no way it would work and it TOTALLY did! It think the fact that it is my perfume helps also because it is a familiar comforting smell that he can smell in the air until he falls asleep. Also maybe with the window you guys could make an event of going to the store and letting him pick out some cute new curtains for the window to "de-spooky" it. I am freaked out by windows at night myself and if I can see even a couple inches of it I have to get up and move the blinds so that it is covered. Good luck!! :)