Curtains

I have black out curtains in the children's rooms.  They block out any street lights, cars going by, random neighbor's oversensitive motion sensor flood lights... They also keep the the heat in better thus saving energy.  The best part is, I only bought one panel for two windows.  I cut it half and hemmed it.  One half panel covers the whole window when closed.  Plus, for little ones there isn't a long draping curtain to tug on because it is out of reach!