Lol reading some of the suggestions-
if I had a weapon....I'd feel safer.
As for what kinda things- a copy of the month to month lease ( he could've left it outside the door)
but put it on the counter.
A space heater, things like that.
Nothing weird, but still....the house has a shared hallway. Anything he wants to leave wouldn't be stolen or outside. There's no reason to come in for that.
Whatever the case, I guess I'll look at the state laws when I get out of work later.