His seemingly pointless map/notebook MIGHT be an insanely elaborate encryption systems for tracking his research on aliens and UFOs that literally nobody but him could even BEGIN to understand because of how ridiculous it is.
Still utterly useless besides roleplaying, but yet another layer of "the fuck is with this guy"
If that's okay I mean, either way it's still just a notebook of useless information, but i can have him pretend to be looking for things instad of actually have them written in it.