I'm sure everyone has turned out the lights to make games like Silent Hill seem more environmental, but when you were younger, did you ever do silly things to make the game seem more real?
Back when I was in 5th grade, I used to sit down and play Leisure Suit Larry in the Land of the Lounge Lizards in an old ratty blazer I called my "lesiure suit." What effect this had on the game remains to be seen, but I always used to slip it on before firing up the ol CGA monitor