Planet of the Apes movies, missing any meeting or Saturday morning field service, I dream of Jeanie, Sigmund and the Sea Monsters (with Witchie-poo), drinking, rock music, R-rated movies, "worldly" girls.
Anything they either explicitly said no to or implicitly made it taboo and made it all the more fun to do. Sometimes I would feel like I was playing "Hogan's Heros", devising schemes to get away with things. Now that I'm old enough and live my own life away from the JWs, there's really no extra thrill if I see an R-rated movie.
If there's anything I miss about being a witness, it's that feeling of being a secret rebel.