Wanna know what`s in J.J. LaRoche`s super mysterious box? Well, do you remember that man who agressed LaRoche`s mom? 
Yes, LaRoche is hiding Scott`s tongue in there. Bummer, or what? If you rewatch episode 21, season 5, you`ll see, at the end of the episode, that Scott`s mom says that her son`s tongue was never found. So, voila!